Wayne Ellington Jr. has taken an indefinite leave of absence from his team

The father of Los Angeles Lakers guard Wayne Ellington Jr. was shot dead in Philadelphia on Sunday.

Police received a call about an traffic collision in nearby Germantown and found 57-year-old Wayne Ellington Sr. in the front seat of his Oldsmobile with a bullet in his head, the Philadelphia Inquirer reported.

Ellington was immediately taken to the nearby Albert Einstein Medical Center for surgery, but was pronounced dead about three hours later.

A motive for his murder is not yet clear, and the city has offered a $20,000 reward for any further information.

Ellington Jr., who grew up in Philadelphia and joined the Lakers as a free agent in September, took an indefinite leave of absence from the team before traveling home earlier this week.

“I encourage anyone with any information to come forward to help authorities solve this case,” he said in a statement.