By Brad Segall

CHELTENHAM, Pa. (CBS) — A Montgomery County judge today sentenced a Philadelphia man to at least 22½ years in state prison for the Christmas Day 2011 murder of his former girlfriend’s new boyfriend inside a house in Cheltenham.

Prosecutors say Rayshon Carwheel opened fire inside the house when he found Robens Borno wrapping Christmas presents with his former girlfriend, the mother of his child (see related story).

Borno was killed in the hail of gunfire.

Carwheel, 25, pleaded guilty to third-degree murder, possession of a gun without a license, and two counts of reckless endangerment.

Now, he has been sentenced to 22½-50 years behind bars.

Carwheel had been planning to take the case to trial but apparently had a change of heart after his co-defendant, Ezra Childs, the lookout man, pleaded guilty last October and agreed to testify against Carwheel (see related story).

Childs is awaiting sentencing on charges that include murder and carrying a gun without a license.