GREENWICH, Conn. (AP) Greenwich police have issued an arrest warrant for a Norwalk man they say tried to blow up an oxygen tank by shooting at it.

Police say 35-year-old Matthew Ilchert went to the home of acquaintance Ed Koller on Monday, placed an oxygen tank against a pillar and fired a pistol at it in an apparent attempt to cause an explosion.

Koller says he had been helping Ilchert try to win back an ex-girlfriend, but their relationship soured.

Police say after the shooting, Ilchert struck Koller with his car while fleeing. Ilchert crashed near the Westchester County Airport in New York and was arrested. He remains in custody there.

Greenwich police are working with New York authorities on his extradition.