COLORADO SPRINGS, Colo. (AP) – Colorado police say a man with too much “Star Trek” on his mind used a sword modeled after the weapon carried by Klingon warriors to demand money from two convenience stores.

Investigators say the man took an unknown amount of cash from a 7-Eleven store Wednesday but left empty-handed when he tried to rob another store about 25 minutes later.

The StarTrek.com Web site says the double-pointed sword used by the Klingons on “Star Trek” is crescent-shaped and about a yard long. Police did not specify what material it was made of.

No one has been charged in the incident.

Police Lt. David Whitlock says no one was injured.