A Massachusetts man is facing charges in connection after severed human body parts were discovered inside a discarded duffel bag near the campus of Massachusetts Institute of Technology. Carlos Colina, 32, pleaded not guilty in Cambridge District Court to charges of being an accessory after the fact to assault, battery causing serious bodily injury and improper disposal of a body. He is being held on $1million bail. Remains, including a torso and limbs, first were found in a duffel bag discarded outside the building of technology company Biotech Saturday morning, according to police. Scroll down for video . Carlos Colina, left, faces charges of accessory after the fact to an assault, battery and improper disposal of a body. Above, he speaks during his attorney during his arraignment . Colina was arrested Sunday after severed human body parts were discovered in a duffel bag and a human head was found in his apartment building's recycling bin . The head of victim Jonathan Camilien, 26, of Somerville, was found in a recycling bin in Colina's apartment building across the street, according to the police report. Middlesex District Attorney Marian Ryan says the death is considered a homicide, though Colina has not been charged with murder. 'We are not seeking anyone else in connection with the discovery of these human remains,' she said Monday. A saw, rope and cleaning supplies were found in Colina's apartment, which is located one block from the Cambridge Police Department. 'We're confident that this was not a random act,' Haas said. The suspect had wounds on his face and neck and a vacuum could be heard during the search when police discovered the victim's head, according to the Boston Globe. Colina had wounds on his face and neck and a vacuum could be heard during the search when police discovered the victim's head . Authorities have said that the death is considered a homicide, though Colina has not been charged with murder . The relationship between the victim and suspect was not immediately known, though Camilien and Colina were known to each other. A motive was not disclosed, . Both their families were in court on Monday. According to the investigation, a neighbor reported hearing an argument coming from Colina's apartment Friday night, while Colina and Camilien were last seen returning to the building just after 11 pm Friday. A man now identified as Colina was seen in surveillance video from nearby Biogen offices exiting the apartment building at about 4.15 a.m. Saturday carrying a duffel bag, authorities said. He returned to the apartment building empty handed. Defense attorney John Cunha Jr. called it a sensational case. 'Obviously the circumstances of the case are sensational enough,' he said. 'I'm not going to exacerbate it.' He later called it 'a sad situation.' Colina has another assault and battery case currently pending against him where the victim is not Camilien.
Carlos Colina, 32, pleads not guilty to battery, improper disposal of body.
Cambridge police found torso in bag before finding head in recycling.
A saw, rope and cleaning supplies were found in Colina's apartment.