Four people, two from each vehicle, were taken to Erie County Medical Center at noontime Monday, after a Niagara Frontier Transportation Authority para-transit van collided with a Lincoln Navigator in Buffalo’s Fillmore-Clinton neighborhood, NFTA officials reported.

None of the injuries was believed to be life-threatening, although the force of the collision sent the van onto its side. Only the driver and one passenger were in the van at the time of the crash.

The two vehicles collided at about 11:55 a.m. at the intersection of Clinton and Smith streets. The NFTA van, which transports people whose physical problems prevent them from riding a regular Metro Bus, was heading north on Smith Street, while the other vehicle was westbound on Clinton.

The intersection has a traffic light. Police still are investigating the accident, trying to determine who may have been at fault, according to C. Douglas Hartmayer, NFTA public-affairs director.