Police say a 13-year-old Indianapolis boy died when a board used to prop open a garage door gave way and the door came down on his neck.

A police spokesman said Terry Lee Barnett was tinkering with an electric car when the two-by-four dislodged about 11 a.m. Thursday and he became pinned under the door.

Sgt. Paul Thompson says Barnett was trapped for as long as 15 minutes before a relative found him on the floor of the family's garage on the city's west side.

Barnett was taken to Riley Hospital for Children and pronounced dead a short time later.

Thompson says the door had no spring mechanism and relatives told investigators it was prone to falling.