HOUSTON (AP) - Houston's police chief is asking for the community to "reserve judgment" after one of his officers shot and killed a one-armed, one-legged man in a wheelchair who was waving what turned out to be a pen.

Houston Police Chief Charles McClelland also announced Monday that he has asked the FBI to help investigate the weekend shooting inside a group home. McClelland called it "tragic and unfortunate for everyone involved."

Officer Matthew Marin shot Brian Claunch early Saturday after responding to a call that the double-amputee was causing a disturbance inside the home.

Police have said Claunch cornered Marin and threatened him. Marin reportedly told investigators he didn't know the object in Claunch's hand was a pen.

Marin has been placed on administrative leave.

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