-LRB- CNN -RRB- -- Police have made an arrest in the home invasion slaying last year of a Southern California couple in their beach house , authorities said Monday . Joshua Graham Packer , 20 , of Ventura is facing charges including three counts of murder and two counts of robbery , Capt. Ross Bonfiglio of the Ventura County Sheriff 's Department said . Packer is accused of murdering Brock Husted , his wife , Davina Husted , and her fetus . The Husteds , who were both 42 , were stabbed to death in their seaside home in Faria Beach , California , on May 20 . Chief Gary Pentis of the Ventura County Sheriff 's Department said it appeared the suspect targeted the victims . `` My personal opinion ? This was not a random act , '' Pentis said at a news conference Monday . Until the couple 's slaying , the gated community of luxury homes had not recorded a homicide in 15 years , police said . According to investigators , the Husteds were home with their two young children on the night of the slaying . Their daughter was asleep in bed , and their son was watching `` American Idol '' in the living room . About 10:30 p.m. , the suspect entered the home through French doors that face the ocean , police said . The killer was dressed in dark clothing and wore a motorcycle helmet , authorities said . He walked past the child who was watching television and stabbed the Husteds . Davina Husted was four months pregnant . The home was not ransacked , and the alleged murder weapon was left at the scene , Bonfiglio said . A sample of Packer 's DNA taken after an arrest in Santa Barbara matched the genetic material found at the Husted crime scene , said Pentis the sheriff 's department chief . He added that items from the victims ' house were found at the suspect 's home . Scott Husted , the brother of Brock Husted , thanked the sheriff 's department for solving the killings . `` This is a milestone , a very huge milestone in this process , '' he said . `` We 're very grateful for the work the Ventura County sheriff 's department has put in this case . '' `` This in no way takes away the loss our family has had . Brock was our baby brother . '' Packer is being held on $ 2.2 million bail at the Ventura County Main Jail .