Portland police charged a homeless man from Portland with multiple felonies after they say he attempted to carjack two people before forcing a third from his vehicle and speeding away in it.

Richard McDowell Photo courtesy of Cumberland County Sheriff’s Office

Richard McDowell, 41, was arrested in Kennebunk after abandoning the Honda Civic he stole near 1455 Congress St. at about 10:10 a.m., police said.

McDowell was armed with an unidentified sharp object when he tried to carjack one person but was denied, according to police. Police say McDowell then attacked the driver of a Porsche, seriously injuring the driver.

He then forced a third motorist out of a black Honda Civic and sped away in the vehicle, police said.

A bystander unsuccessfully attempted to stop the vehicle. The person who was seriously injured was transported to Maine Medical Center with non-life threatening injuries, police said.

Police said McDowell was transported to Cumberland County Jail and will face multiple counts of robbery and elevated aggravated assault.

Comments are not available on this story.