The Sunni extremist group in Iraq has posted photos online that appear to show mass executions of Iraqi soldiers.
The army personnel are pictured being led away and then lying in trenches before and after their “execution”.
Iraqi military spokesman Lt. Gen. Qassim al-Moussawi said the pictures were authentic and depicted events in Salahuddin province.
However, the images’ authenticity has not been independently confirmed.
Their emergence came as the Iraqi government claimed to have “regained the initiative” against the offensive by Sunni rebels led by ISIS – the Islamic State in Iraq and the Levant.
The Sunni extremist group in Iraq has posted photos online that appear to show mass executions of Iraqi soldiers
Extremists captured key cities, including Mosul and Tikrit, last week, but several towns have now been retaken from the rebels.
The pictures, apparently posted by ISIS, are said to show what happened to soldiers after the group took over an army base in Tikrit following the surrender of the garrison there.
Video footage, apparently filmed earlier, shows many hundreds of men being marched off from near the Speicher base, with the voice on tape saying they were soldiers who had surrendered at the facility.
Still photographs show large numbers of young men being transported away in trucks.
Captions on the photographs, which again appeared to have been issued by ISIS, said they were being taken away to their deaths.
What appear to be ISIS fighters are seen firing on their captives in some images.
Earlier, Iraqi army spokesman Lt. Gen. Qasim Ata, said the military had scored successes against the militants in several areas, killing 279 of them. The figure could not be independently verified.
There were reports of heavy clashes round the city of Tal Afar, west of Mosul, with mortar shelling of some districts as militants tried to enter the city.
Government forces were reported to be building up in the city of Samarra, north of Baghdad, ready for a counter-offensive on Tikrit.
Washington remains concerned at the security situation in Iraq and has announced it is increasing security at its embassy in Baghdad but relocating some staff to safer areas.
The US embassy would remain “fully equipped to carry out its national security mission”, the state department said.
The USS George HW Bush aircraft carrier is being deployed to the Gulf, accompanied by two more warships. However, the US says no US troops will be deployed on the ground in Iraq.
Neighboring Iran has offered direct assistance to Baghdad, but denies sending troops. However, there are reports of more than 130 Revolutionary Guards on hand to provide training and advice.
ISIS insurgents in Iraq have seized the city of Tikrit, their second major gain after capturing Mosul on Tuesday, security officials say.
Tikrit, the hometown of former leader Saddam Hussein, lies 95 miles north of the capital Baghdad.
Iraqi PM Nouri Maliki vowed to fight back against the jihadists and punish those in the security forces who fled offering little or no resistance.
The insurgents are from the Islamic State of Iraq and the Levant (ISIS).
ISIS insurgents in Iraq have seized the city of Tikrit, their second major gain after capturing Mosul (photo AFP/Getty Images)
ISIS, which is also known as ISIL, is an offshoot of al-Qaeda.
The Islamist group controls considerable territory in eastern Syria and western and central Iraq, in a campaign to set up a Sunni militant enclave straddling the border.
There were also reports on Wednesday of fighting further south, in Samarra, 70 miles north of Baghdad.
Separately, at least 21 people were killed and 45 hurt by a suicide bomber at a Shia meeting in Baghdad, police said.
As many as 500,000 people fled Mosul after the militants attacked the city. The head of the Turkish mission in Mosul and almost 50 consulate staff are being held by the militants, Turkish officials say.
Turkey’s foreign minister warned there would be “harsh retaliation” if any of its citizens were harmed.
The insurgents moved quickly south, entering the town of Baiji late on Tuesday.
There were heavy clashes reported in Tikrit, with dozens of insurgents attacking security forces near the headquarters of the Salaheddin provincial government in the city centre.
AFP news agency quoted police and witnesses as saying there was fighting at the northern entrance to Samarra.
Earlier PM Nouri Maliki vowed to fight back against the militants. He has asked parliament to declare a state of emergency.
In a live TV address, he said a “conspiracy” had taken place in Mosul and surrounding Nineveh province.
Nouri Maliki said he did not want to apportion blame for who had ordered the security personnel “to retreat and cause chaos”.
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Iraq’s PM Nouri Maliki has asked parliament to declare a state of emergency, after Islamist militants effectively took control of Mosul city.
Nouri Maliki acknowledged “vital areas” of the northern city had been seized.
Overnight, hundreds of men armed with rocket-propelled grenades and machine-guns seized the Nineveh provincial government’s offices in Mosul.
They also destroyed several police stations before overrunning the airport and army’s operations headquarters.
Elsewhere, a double bomb attack in the central town of Baqouba killed at least 20 people, police and medics said. The blasts, targeting a funeral procession in the capital of Diyala province, also wounded 28 people.
Iraq’s Islamist militants took control of Mosul city
In the past week, the jihadist Islamic State in Iraq and the Levant (ISIS) and its allies have carried out major attacks on cities and towns in western and northern Iraq, killing scores of people.
Militants from ISIS have been informally controlling much of Nineveh province for months, imposing tolls of the movement of goods and demanding protection money from local officials.
After five days of fighting, they took control of key installations in Mosul, Iraq’s second largest city with an estimated population of 1.8 million.
PM Nouri Maliki, who is struggling to form a government in the wake of the April elections, has vowed to drive the ISIS “terrorists” out of mainly-Sunni Mosul in short order.
He is unlikely to succeed soon. He made similar vows when Sunni militants took over Falluja, west of Baghdad, in January, and they are still there.
It is not yet clear whether it is only ISIS involved in the Mosul takeover. In Falluja and its province, Anbar, Nouri Maliki has clearly alienated many Sunni tribesmen and others, creating fertile soil for the radicals.
Internet images of local youths and even children stoning Iraqi security vehicles as they fled Mosul suggest that the Shia PM is not popular there either.
ISIS is also actively fighting in neighboring eastern Syria to establish its control there, apparently aiming to straddle the border with an Islamic state.
If Nouri Maliki is to defeat the Sunni radicals, he may need the help of Kurdish forces from the north. That will come with a heavy price tag, and they have in any case so far refused.
On Monday, Nineveh Governor Atheel al-Nujaifi made a televised plea to the city’s residents, calling on them to “stand firm in their areas and to defend them against the strangers”.
He fled shortly before the provincial government’s headquarters fell to the onslaught late on Monday night.
On Tuesday, several residents told the Associated Press that black flags associated with jihadist groups were flying from buildings and that the militants had announced over loudspeaker that they had “come to liberate Mosul and would fight only those who attack them”.
Many police stations were reported to have been set on fire – local TV stations showed pictures of plumes of smoke rising over the city – and hundreds of detainees set free.
An interior ministry official admitted that police and soldiers had fled after removing their uniforms, telling the AFP news agency: “The city of Mosul is outside the control of the state and at the mercy of the militants.”
Osama al-Nujaifi, the speaker of parliament and brother of Nineveh’s governor, called on the Iraqi government and Kurdistan Regional Government to send reinforcements to Mosul to “fight the terrorists”, whom he said had seized military hardware, including helicopters.
Meanwhile, the Turkish consulate in Mosul confirmed reports that 28 Turkish lorry drivers had been abducted by militants in Nineveh.
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