Two adults and a 2-month-old baby boy died after a crash Monday night when another driver failed to stop at a red light on Scenic Highway at Blount Road, Baton Rouge police said. 

Randell Williams Sr., 23, and Kalandria Bethley, 21, both of 2817 Jay St., died in the crash, which occurred around 6:15 p.m. in the 10600 block of Scenic Highway, Baton Rouge Police spokesman Sgt. Don Coppola Jr. said in a news release. Neither Williams, who was driving, nor  Bethley, a passenger in the front seat, was wearing a seat belt, Coppola said.

Their 2-month-old son, Randell Williams Jr., was properly secured in a child safety seat in the back seat. The child was transported to an area hospital and remained in critical condition for several hours before being pronounced dead Monday afternoon, Coppola said.

Williams was driving a 2006 Toyota Scion east on Blount Road and crossing the intersection at Scenic Highway when a 2003 Toyota Avalon struck the vehicle. The Avalon, which was traveling south on Scenic Highway, failed to stop at a red traffic light, Coppola said.

The 46-year-old man who was driving the Avalon and his 56-year-old female passenger were both restrained at the time of the crash. They were transported to an area hospital with moderate to severe injuries.

Coppola said police suspect the driver of the Avalon was speeding and under the influence of drugs at the time of the crash.

The investigation remains ongoing.