In this photo provided by the FBI Denver Special Agents escort Rivera Gracias, one of the FBI’s “Ten Most Wanted Fugitives,” off a plane, Wednesday, March 27, 2013 in Denver. Gracias was wanted in Jefferson County in the slaying of 69-year-old Richard Limon, whose beaten and stabbed body was found dumped along a roadside in 2011. (AP Photo/FBI) DENVER (AP) — One of the FBI’s Ten Most Wanted Fugitives has voluntarily returned from El Salvador to Colorado to face charges in a 2011 slaying. The FBI says suspected gang member Edwin Ernesto Rivera Gracias landed in Centennial, Colo., with FBI agents Wednesday afternoon. He was wanted in Jefferson County in the slaying of 69-year-old Richard Limon, who was found beaten and stabbed, and dumped along a road in 2011. An affidavit filed in federal court alleges Rivera Gracias had talked about killing Limon because of allegations that Limon molested Rivera Gracias’ girlfriend. The girlfriend was the daughter of Limon’s wife. Limon’s wife and another man pleaded guilty to second-degree murder in the case. Rivera Gracias’ girlfriend pleaded guilty to being an accessory to commit murder.