Matthew Hertgen has been in custody since his arrest on Feb. 22, after allegedly attacking and killing Joseph Hertgen in the family's Princeton residence.
Pennsylvania State Police said a Mazda carrying four brothers overturned numerous times before going through the guide rail of Route 95 in Philadelphia.
A state Department of Corrections lieutenant has been accused of stealing state-owned ammunition and reselling it for hundreds of thousands of dollars.
The car hit two trees along the right side of Route 195 ejecting both the driver and passenger and were pronounced dead at the scene, according to Marchan.
Matthew Hertgen is accused of brutally killing his brother, Joseph Hertgen, in Princeton. A relative told police he has struggled with "terrifying visions."
Gusty winds on Saturday fueled three fires in Pennsville, Gloucester Township and Hopewell in Mercer County, one of which is considered to be suspicious.
Rahim Johnson is charged with murder, after 26-year-old Victoria Lee was found stashed beneath a bed in the Plainsboro residence they had shared, police said.