ALLEN PARK, Mich. — 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. His arraignment is Monday in Allen Park District Court.

The dismembered bodies of Chris Hall, 42, and his 32-year-old fiance, 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.

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

Police arrested Bowling on Thursday. Bowling did not yet have a lawyer Sunday, said the prosecutor's spokeswoman, Maria Miller.

Bowling's father said he hasn't spoken to his estranged son in more than 10 years.

"I really don't know what to say except my heart goes out to the families of these people" who died, Gary Bowling, 69, of Dearborn told the Detroit Free Press. "I keep thinking it's a dream."

A Greenway family friend, April Purdin, told The Associated Press last week that the man she knew only as Roger was Greenway's ex-boyfriend and arrived about three weeks ago.

Neighbor Samantha Dolliver said Hall's sister was searching for the couple Wednesday and pounded on the couple's door. She had no luck.

"She said she had a feeling in the pit of her stomach that something was wrong," Dolliver said.

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