Five cyclists were killed and four others injured when the group was hit by a pickup truck in Michigan on Tuesday.

Reports say that the accident occurred at around 6.30 p.m. near a park in Cooper Township, north of Kalamazoo. Kalamazoo County Prosecutor Jeffrey Getting reportedly said that the injured were receiving treatment at area hospitals.

A hospital spokesman told the BBC that one of the injured is in a serious condition.

“Our thoughts and prayers are with the families of the victims," Getting said at a news conference Tuesday night, "I can't even begin to imagine what they're going through.”

The truck’s driver fled from the scene but was caught by the police later. Getting described him as a 50-year-old man from western Michigan. He remains in custody and no charges have been filed yet.

The identities of the cyclists were withheld as their families were still being notified. The group included men and women but no children, authorities said.

Getting said that earlier in the evening, authorities began receiving calls about a blue pickup truck that was being driven in an erratic manner. There was no police chase underway when the crash occurred but authorities were looking for the truck, he added.

"There's very little I can and will tell you about exactly how this incident happened," Getting said, declining to answer questions regarding the suspect as well. He said that the man’s name will not be revealed until his office has had an opportunity to determine the charges.