A New Channel 3 follow up about the man who sawed his arms to the bone in a Southern California Home Depot store.  

The man remained in critical condition Thursday night and police say he wasn't speaking to investigators. 

The motive for his actions remained a mystery.  Police said the man grabbed several small saws and attacked himself yesterday in a store east of Los Angeles.

An off-duty paramedic used rope and cloths from the shelves to make a tourniquet to stop the massive bleeding. 

The store remained closed Thursday night.