Authorities have arrested an 18-year-old man after allegedly crashing into a car filled with elderly people, while he was on drugs.

According to Pennsylvania State Police in Lancaster, the wreck happened on Jan. 22 at around 2:09 p.m. on Beaver Valley Pike and Brenneman Rd. in Strasburg Twp.

Officers say the 18-year-old had been driving north on Rt. 222 when he had "drifted" into the southbound lane, hitting four elderly people head on.

When officials arrived at the scene, they found the four elderly Quarryville residents, ages 79, 81, 82, and 84, injured along with the driver who collided with them.

Police say all people involved in the crash were sent to the Lancaster General Hospital for their injuries.

While the investigation is ongoing, officers say the 18-year-old has been arrested on suspicion of driving while under the influence of drugs.

The current status of the 18-year-old and the four victims is unknown.