Former National Football League (NFL) running back Doug Martin has died aged 36 while in police custody in California.
The Oakland Police Department said the former American football star - who played for teams including the Tampa Bay Buccaneers - died after being involved in an alleged home break-in and a struggle with officers on Saturday.
"While attempting to detain the individual, a brief struggle ensued," the department said, adding Martin became unresponsive and was taken to a hospital, where he later died.
His family announced his passing and said his cause of death was "unconfirmed".
"It is with great sadness to inform you all that Doug Martin passed away Saturday morning," his family told US media. The family asked for "privacy at this time".
