Thirty years ago Wednesday, the massacre of six girls and one woman at La Cruz de Alajuelita above San José, Costa Rica set off a chain of gruesome killings that remain unsolved.

Authorities say they may have captured the serial killer terrorizing drug-addicted prostitutes in San José's slums. A suspect has been tied to three of the bodies through DNA evidence.

Karen Elena Briceño Juárez, whose body was found on April 12 in an abandoned lot in Barrio México, northwest of downtown San José, is yet another victim who investigators say could have died by the hands of a killer who is targeting prostitutes in the city’s poorest slums.

As a serial killer who has murdered eight impoverished women near Costa Rica's capital remains on the loose, police are trying to come up with answers and leads that can point them in the direction of their suspect.

A serial killer targeting impoverished women living on the streets – often prostitutes and drug addicts – is believed to have struck again after the body of a 18-year-old woman was found in an abandoned lot near the Children's Museum in San José.

Costa Rica police arrested a suspected serial killer early Wednesday morning in Hatillo, a southern San José suburb. The man is suspected of killing seven homeless women since April.