A Pennsylvania truck driver died Monday afternoon after his vehicle jumped a curb and struck several trees on Northern Parkway west of Greenspring Avenue, a Baltimore Police spokesman said.

Charles Bergholtz, 63, of Bensalem, Pa. was pronounced dead at 4:22 p.m. at Sinai Hospital, said the spokesman, Agent Donny Moses.

Witnesses said Bergholtz had been driving a Volvo truck eastbound in the 2600 block of Northern Parkway when the vehicle began swerving and ultimately drove over a curb, striking several trees in a wooded area before it came to a stop, Moses said.

People went to check on him and found that he was unconscious and having trouble breathing, Moses said. They pulled him from the vehicle and began performing CPR until medics arrived, the spokesman said.

"Preliminarily it looks like he suffered some kind of medical crisis which caused him to lose control of the vehicle," Moses said.

Parts of Northern Parkway were shut down between approximately 4 p.m. and 6:40 p.m. for the crash investigation, he said.