article_snippet.sent: Carlos Colina, 32, is being held on $1 million bail after pleading not guilty to aggravated assault and battery and improper disposal of a human body in Cambridge, Massachusetts on Monday.
article_snippet.sent: Carlos Colina is believed to have known A witness ; A witness is friends with A witness younger brother, Christopher Camilien, on Facebook.
article_snippet.sent: Middlesex District Attorney Marian Ryan said Camilien's death is considered a homicide, even though Carlos Colina has not been charged with murder. 
highlights_snippet.sent: Carlos Colina, 32, pleaded not guilty to assault and improper disposal of a human body on Monday after the remains were found near his building .
  