Ten members of a notorious street gang, or mara, have been arrested after six people were shot dead at an amateur football game in El Salvador on Sunday.
Police said the suspects belonged to the notorious Mara 18
The gang members forced the players and about 100 fans to remove their shirts and lie on the ground before separating the six and shooting them in the head.
A seventh man, reported to have gang-tattoos, was later killed in what police described as a revenge attack.
Gangs are blamed for a wave of crime in El Salvador, Guatemala and Honduras.
Police said the men who attacked the football match in the southern city of Zacatecoluca belonged to Mara 18, one of the biggest gangs in the region.
Many of the maras originated in Los Angeles in the 1980s and spread to Central America after their members were deported.
There are believed to be more than 10,000 gang members in El Salvador.