US tech executive David Goldberg, the husband of Facebook's Sheryl Sandberg, apparently died after falling on a treadmill and striking his head at an upscale resort in Mexico, authorities have said.
Goldberg, 47, was the chief executive of online polling firm SurveyMonkey and husband of Facebook's chief operating officer Sheryl Sandberg.
He died suddenly on Friday, according to his brother, who did not give a cause of death.
Mexican officials have confirmed he died in hospital after a workout accident during a family trip to a Pacific coast resort in Punta Mita, in Nayarit state.
"His relatives have indicated that he went to work out, and that they became concerned when he did not come back," an official at the state prosecutor's office said.
"They went looking for him and found him in a pool of blood next to a treadmill, apparently after he fell and struck his head at the hotel gym," the official said, declining to be named.
Goldberg sustained "severe head trauma and haemorrhaging," and died at a medical centre in Nuevo Vallarta, the official added.
Facebook founder and CEO Mark Zuckerberg said that Goldberg was "an amazing person."
US President Barack Obama remembered Goldberg as what he called a leader who always tried to empower others.
