An Uber driver who may have picked up fares during a weekend killing spree was headed to court Monday to face charges of murdering six people in the northern state of Michigan, AFP reports.

Kalamazoo County Prosecutor Jeff Getting said local law enforcement agencies were still assessing all the crimes 45-year-old Jason Brian Dalton will be charged with at an arraignment later in the day.

"I anticipate out of that review will come six counts of murder, two counts of assault with intent to commit murder, and eight charges of what we call felony firearm, using a firearm during the commission of a felony," Getting told CNN on Monday.