At least one person was seriously injured when a driver who hit a school bus in Burlington crossed Route 4 in Harwinton and hit another car head-on Wednesday morning, according to police.
The second crash happened around 8 a.m. near Route 72 and Route 4 was closed for hours.
Burlington police said the driver sideswiped a school bus and drove off. No children were on the bus at the time of the crash.
As crews were responding to the crash involving a school bus, crews were called to a more serious crash after the driver hit another car head-on, police said.
Three people were in the two vehicles and the driver believed to have struck both vehicles was flown by LifeStar medical transport helicopter to Hartford Hospital, according to police.
No additional information was immediately available.