Rescue workers help a man who was injured after a fragmentation grenade exploded next to an open air bar in Puerto Vallarta, Mexico, early Thursday, Aug. 26, 2010.

At least 20 people were wounded, four of them seriously, when unidentified individuals tossed a bomb into a bar in Puerto Vallarta, a resort city on Mexico’s Pacific coast, police said Thursday.

The attack occurred around midnight Wednesday at the Pink Cheladas bar, where about 150 young people were partying, Puerto Vallarta police department spokesmen told Efe.

http://www.borderlandbeat.com/2010/08/bomb-wounds-20-in-mexican-resort-city.html