Statistics show that generally speaking you are better off resisting an attack than succumbing to it. Sure, a mugger may just take your wallet and leave. Or he may shoot you in the back of the head to make sure there are no witnesses. You just don't know.

And a group of senior citizens in Costa Rica wasn't about to wait to find out.

A tour bus of U.S. senior citizens defended themselves against a group of alleged muggers, sending two of them fleeing and killing a third in the Atlantic coast city of Limon, police said on Thursday.

One of the tourists _ a retired member of the U.S. military aged about 70 _ put assailant Warner Segura in a head lock and broke his clavicle after the 20-year-old and two other men armed with a knife and gun held up their tour bus Wednesday, said Luis Hernandez, the police chief of Limon, 80 miles east of San Jose.

The two other men fled when the 12 senior citizens started defending themselves. The tourists then drove Segura to the Red Cross where the man was declared dead. The Red Cross also treated one of the tourists for an anxiety attack, Hernandez said.

The tourists left on their Carnival cruise after the incident and Hernandez said authorities do not plan to press any charges against them, saying they acted in self defense.

"They were in their right to defend themselves after being held up," Hernandez said.

Hernandez said Segura had previous charges against him for assaults.