The suspected car bomb exploded close to a police station in Gaziantep, Turkey’s Dogan news agency reported.
Police officers were reported to be among the casualties and media showed a bus and other vehicles on fire.
No group has so far said it carried out the attack.
However, rebels from the outlawed Kurdistan Workers’ Party (PKK) are active in south-eastern Turkey, which has a Kurdish majority.
Gaziantep’s governor Erdal Ata said the explosion had been caused by a remote-controlled car bomb, the Dogan agency said.
Earlier on Monday, two Turkish soldiers were killed and another wounded in a mine blast in south-eastern Hakkari province. Turkish officials blamed the attack on the PKK.
Clashes between the PKK – which seeks autonomy for the Kurds – and Turkey’s armed forces have increased in south-eastern Turkey over the past year.
QFcwwdZN32gImage source: Wikimedia Commons President-elect Donald Trump celebrated his election victory at the Ultimate Fighting…
Millions of voters across the US chose to return Donald Trump to the White House…
Donald Trump declares victory in the US election as he addresses jubilant supporters in Florida.…
Stocks around the world are rising as Donald Trump appears to be on the cusp…
Donald Trump has won Pennsylvania, North Carolina and Georgia and taken a lead over Kamala…
Quincy Jones, the celebrated musician and producer who worked with Michael Jackson, Frank Sinatra, Ray…