Shots fired outside Dallas conference on Prophet cartoons

Police at Curtis Culwell Center in Garland, TX
Police warned poeple not to leave the conference centre
Shots have been fired outside a conference on cartoons of the Prophet Muhammad in a suburb of the US city of Dallas, police say.
A Swat team member told the conference that one officer and two suspects were shot - but it is not clear if the shootings are related to the event.
Police have put the Curtis Culwell Center in Garland on lockdown and told participants in the event not to leave.
Dutch anti-Islamic politician Geert Wilders was attending the conference.
Mr Wilders tweeted that shots had been fired and he had now safely left the building.
One eyewitness told the Associated Press news agency that he heard about 20 shots, which appeared to come from a car driving past the conference centre, followed by two individual shots.
The American Freedom Defense Initiative had organised the event, which included a $10,000 award for a cartoon of the Prophet Muhammad. 
Such cartoons are offensive to many Muslims.
There were widespread protests in 2006 when the Danish newspaper Jyllands-Posten published cartoons satirising the Prophet Muhammad. 
In January this year, 12 people were murdered by two Islamist gunmen at the French magazine Charlie Hebdo, which had also published similar cartoons.