It was a Christmas massacre in Texas: seven people shot and killed, with police trying to figure out why.  But new details make this already-horrible crime even more shocking.

FOX News Radio's Eben Brown reports:

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It was a gruesome scene at the Lincoln Vineyards apartment complex in Grapevine, Texas.

"It's certainly the worst single shooting that we've had with this many victims."

Police had already said they believed the seven shooting deaths were a family murder-suicide on Christmas Day, but now they believe the one who did the shooting was the one wearing the Santa  suit.  It appears the family had just finished opening their gifts when they were gunned down.  Wrapping paper was all over the room and the apartment was all decked out - they even had a tree.  The victims ranged in age from 18-60.

Eben Brown, FOX News Radio.