Three more suspects have been arrested in the December killing of the Pueblo man found beaten, stabbed and burned in his home.

The Pueblo County Sheriff said Karen Sue Depierre, 40, Sheena Sann Baker, 45, and Elizabeth Ann Abeyta, 38, went to Robert M. Piserchio’s home the week before his death under the guise that they needed help and stole his wallet.

All face murder, aggravated robbery and theft charges and are being held on $250,000 bond.

According to a tip, Depierre believed Piserchio had purchased some of her belongings from an ex-boyfriend and was out for revenge, Pueblo Sheriff’s spokewoman Laurie Kilpatrick said in a news release Friday.

Piserchio, whose sister is married to Fountain Police Chief Dan Corsentino, was found dead in a bedroom of his Pueblo home on Dec. 8.

Already arrested and charged with first-degree murder in the case is Aaron Wilkerson, 25, who was arrested Dec. 23 in Colorado Springs. He is also suspected of assaulting a 62-year-old woman with a stun gun on Dec. 7 in the Office Max parking lot at 1646 Cheyenne Mountain Blvd.

Depierre told sheriff’s detectives she and Wilkerson dealt meth to each other.

Investigators are still looking for Matthew Adams Barnes, 30, a fugitive sex offender, wanted for failing to register with El Paso County authorities. He is a person of interest in the slaying. Barnes’ possible connection to the case has not been explained.

Jasmine Bruce, 10, wrote a welcoming message on one of the school’s new interactive white boards at the Howbert Elementary open house on Friday, Jan. 29, 2010. Photo by KEVIN KRECK, THE GAZETTE