ORCHARD PARK, N.Y. — Authorities say a two-vehicle crash in Erie County has killed four people and injured two others.

According to the Erie County Sheriff’s Office, a van with two people inside hit a sedan in Clarence Sunday night.

The sheriff’s office says the van was traveling westbound at a high speed when it blew a stop sign and struck the sedan, which was headed north.

Authorities say all four people in the sedan were killed. The two people who were in the van were in serious but stable condition early Monday at the Erie County Medical Center.

Authorities have not released the crash victims’ names. The sheriff’s office was continuing to investigate the crash.