Police arrested two city men in unrelated murders.

In the first case, James Newsome, 26, of Yeadon, was charged with conspiracy to commit murder for the Nov. 29, 2009, shooting death of Omar Williams, 32, who was found dead in the driver's seat of a silver Honda at 61st and Market streets in West Philly, police said. Williams had been shot in the head and body, and paramedics declared him dead on the scene, police said.

Newsome was one of four people charged in Williams' death, court records show. Newsome, who has several prior drug arrests, was charged in 2006 with attempted murder; prosecutors withdrew charges in 2007, court records show.

More recently, Dion Capers, 27, walked into the 35th police district headquarters in Olney just after 11:30 a.m. yesterday and told officers he stabbed someone on 19th Street near Nedro Avenue in Ogontz. Police hurried to a home there and found Craig Jackson, 29, collapsed and unresponsive in the kitchen, in a large puddle of blood, police said. Paramedics declared him dead on the scene at 11:44 a.m.

Capers has a long, violent criminal history, including arrests for aggravated assault, theft and terroristic threats, court records show. He also was a frequent probation violator who struggled with mental problems, records show.