Police arrested a man Thursday night who may be connected to multiple fires involving sport utility vehicles in two Denver neighborhoods.

Grant Barnes, 24, was arrested near Garfield Street and Bayaud Avenue at 11:30 p.m., said Heather Green, spokeswoman for the Denver Fire Department. An officer stopped Barnes' vehicle after he was acting suspiciously.

Police found evidence in Barnes' car that could link him to the fires, Green said. The suspect had not been charged.

In the past week, six fires have been reported in parked SUVs in the Cherry Creek and Lowry areas, Green said. Several of the fires were started by "incendiary devices," such as a bomb, according to fire investigators.

Investigators said they do not believe that Barnes is an ecoterrorist.

After one vehicle was burned, the letters ELF were found drawn in the soot, Green said. Investigators said they believe that the writing was put there after the fire. ELF is believed to stand for the ecoterrorist group Earth Liberation Front.

"There does not appear to be connection to ELF," Green said.

Investigators "are not yet 100 percent sure," she said, but it appears that if Barnes has any connection to ELF it's as "a wannabe."