David “Dave” Goldberg, SurveyMonkey CEO and husband of Facebook COO Sheryl Sandberg, died of severe head trauma in an exercise accident in the Mexican resort town of Punta Mita, according to local authorities.

Dave Goldberg, 47, was found lying next to a treadmill on May 1st at the Four Seasons Resort Punta Mita near Puerto Vallarta on Mexico’s Pacific coast.

According to Mexican officials, Dave Goldberg left his room at about 4 p.m. to exercise, and family members went to look for him after he didn’t return.

Dave Goldberg was found at about 6:30 p.m. in a pool of blood, with a blow to the lower back of his head. He apparently had slipped on the treadmill and hit the machine, said the official, who spoke on condition of anonymity because the person was not authorized to speak to the press.

The official said Goldberg still had vital signs when he was discovered, but later died at a hospital in Nuevo Vallarta.

The official said the cause of death was severe head trauma and hypovolemic shock, or bleeding.

Dave Goldberg’s family had checked in on April 30 to the exclusive resort.