Gunman on rampage at Missouri factory

Three people have been killed and four wounded after a gunman stormed a factory in the city of St Louis, Missouri, US police said.
Reports say workers at the ABB Power factory are hiding in offices and on the roof awaiting rescue.
Police teams are scouring the factory but it is unclear if the gunman has been killed or is still at large.
Of the injured, two were in a critical condition and one was seriously hurt, a fire department spokesman said.
The fourth had minor injuries, Bob Keuss added.
The shooting began at 0630 local time (1230 GMT) police said.
Local radio reported that the man had opened fire in the car park and then stormed the factory.
Initial reports said one person had been killed but the death toll was later updated.

Earlier, police Captain Sam Dotson said: "We believe (the suspect is) in the complex right now.
"That is why tactical (teams) are going room by room. It's a very large complex, very compartmentalised.
"It's a very large complex and it's connected to an even larger complex so it's a very slow and methodical process and it will take several hours," he added.
ABB spokesman Bob Fesmire could not confirm reports that the gunman was a former employee.
"We can confirm that there was a shooting, but the information is still unclear," he told AFP news agency.
He said there may have been fewer workers at the plant on Thursday due to a blizzard and temperatures plunging to -11C (12F).
The St Louis Post-Dispatch reported that at least one worker had barricaded himself in a maintenance room.
The factory is part of Swiss-based ABB engineering and makes power transformers.