SAN DIEGO - A man who suffered a heart attack while driving in a SUV with his granddaughter died Saturday after his SUV crashed into a pickup truck.

The crash was at about 9 a.m. at the intersection of Ulric and Dunlop streets in Linda Vista, San Diego Fire-Rescue spokesman Maurice Luque said. It involved a Jeep Cherokee driven by the victim and an older pickup truck.

The Jeep overturned during the collision and firefighters had to extract the heart-attack victim from the vehicle. He was pronounced dead on the scene after repeated CPR attempts failed.

The victim's granddaughter was the only passenger in the Jeep. She told police her grandfather had grabbed his chest then slumped over in the front seat, which caused the car to veer out of control, strike the truck and flip over.

The girl was uninjured but was taken to Rady Children's Hospital as a precaution, Luque said.

The pickup truck driver was uninjured.