A stolen vehicle crashed on the Falcon Heights-St. Paul border on Tuesday, leaving two teens in “very serious condition,” according to the Ramsey County sheriff’s office.

An Acura “was traveling at a very high speed” southbound on Arona Street when the driver didn’t stop at a stop sign at Hoyt Avenue about 12:25 p.m., said Sheriff Bob Fletcher. It hit another vehicle and a fire hydrant, which launched the hydrant about 80 feet. The stolen vehicle then struck a tree.

Paramedics took three people who were in the Acura to Regions Hospital — Mohamed Abdul Abdishakur, 18, and two males who are 17-years-old. Abdishakur, of St. Paul, was listed in serious condition at the hospital on Thursday and a 17-year-old also sustained serious injuries, Fletcher said. Two people in the other vehicle had minor injuries.

The Acura was stolen in St. Paul on Monday. On Tuesday, people in the car were fleeing after “they were confronted by some citizens that caught them stealing license plates off other cars” about half a mile away in Falcon Heights, Fletcher said.

At the time of the crash, the Acura didn’t have a rear license plate and “it’s presumed they were in the process” of putting a stolen license plate on the car, Fletcher said.

The crash, stolen license plates and auto theft are under investigation.