Chicago Shooting Rampage Update

The gunman was a disgruntled inventor who thought that he had been cheated over a patent.

Joe Jackson forced a security guard at gunpoint to take him up to the 38th floor offices of Wood, Phillips, Katz, Clark & Mortimer, which specialized in intellectual property and patents. He carried a revolver, knife and hammer in a large manila envelope and chained the office doors behind him, police said.

Jackson, 59, told police before he was shot that he had been cheated over a toilet he had invented for use in trucks, Police Superintendent Phil Cline said Saturday.

He was holding a hostage at gunpoint Friday when a SWAT officer shot him from about 45 yards away, Cline said earlier. There were no negotiations and the hostage was unharmed, police said.

"There was at least another 25 to 30 people on the floor and I think the Chicago police officers from SWAT saved those people's lives," he said.

Good Lord. A toilet for a truck.