ALLEN PARK, Mich. -

Christopher Hall A 39-year-old house guest has been charged with murder, accused of killing his ex-girlfriend and her new partner who'd been hosting him, dismembering their bodies and dumping them in a river.

Roger Bowling faces two counts each of first-degree murder, mutilation of a body and having a firearm in a felony, the Wayne County Prosecutor's Office said Sunday in a statement. First-degree murder carries a mandatory penalty of life in prison without parole.

Bowling also is charged with tampering with evidence, the office said. He was arraigned Monday in Allen Park District Court.

WATCH:Uncut: Roger Bowling arraignment

The dismembered bodies of Chris Hall, 42, and his 32-year-old fiancée, Danielle Greenway, were found Tuesday in the Detroit River and a canal that feeds the river, a mile-wide body of water that separates Detroit from Windsor, Ontario. A circular saw and a suitcase were also discovered.

Before Bowling's arraignment, an Allen Park police officer read a report that detailed what detectives found inside the couple's home on Ann Street.

"According to the Michigan State Police crime scene personnel, copious amounts of blood were found located inside the home. Evidence of gunfire within the home was also noted, with two rounds and one fragment being recovered," the report read. "Michigan Danielle Greenway State Police personnel also found evidence that there was an attempt to cover up the crime scene. Numerous cleaning products and supplies were present within the residence."

Bowling was remanded without bond until his next hearing on Aug. 6. As he was being walked out of the courtroom Greenway's mother, Lila Greenway, yelled out, "burn in hell!"

One of Hall's relatives went to the house last week to check on his whereabouts and confronted Bowling.

"He was hiding in the house and my sister pushed on the door and found him there," said another sister, Laura Robichaud.

She said Bowling denied knowing where they were.

Relatives reported the couple missing Wednesday after having no contact for at least five days.

Roger Bowling

-- Roger Bowling