Authorities in El Salvador say four suspected gang members have been killed at a training camp in the western part of the country.

The attorney general's office said Friday that police and soldiers killed members of the Barrio 18 gang in the township of San Julian in Sonsonate department.

It said the federal forces found the gang training camp in a forest acting on an anonymous tip and were fired on when they arrived. National police commissioner Mauricio Arriaza Chicas said two gang members escaped.

Elsewhere in El Salvador, authorities said the bodies of two suspected members of the Mara Salvatrucha gang were found with their hands and feet bound on the side of a highway in the country's northeast.

More than 1,500 people have been killed here this year.