By Brad Segall

NORRISTOWN, Pa. (CBS) — A Philadelphia man who admitted he illegally bought a gun for another man — who in turn used it to murder a Plymouth Township police officer last year — was sentenced in 2013 to at least two decades behind bars.

READ MORE: Southwest Philadelphia Block Renamed After Rev. Paul 'Earthquake' Moore

Michael Henry pleaded guilty in March to all 23 charges against him (see related story), admitting he lied on the forms used to buy the guns and then illegally gave those guns to Andrew Thomas, a convicted felon.

Thomas used a 9mm Beretta pistol to fatally shoot Officer Brad Fox during a chase following a hit-and-run crash in 2012 (see related story).

The judge sentenced  Henry this past August to 20-66 years in prison (see related story).

“Unfortunately, people are killed sometimes with guns that are sold illegally,” said defense attorney Craig Hosay, “but it’s rare — it never happens — that someone of this stature happens to be the unfortunate victim in this situation.”

READ MORE: Commuters Make Backup Plans Ahead Of SEPTA Strike Vote

Montgomery County prosecutor Kevin Steele hoped the sentence would send a clear message to others.

“Twenty to sixty-six  years should be a deterrent effect on anyone thinking about purchasing a gun for someone who cannot purchase one on their own,” he said following Henry’s sentencing.

Henry, 31, had asked the court for a shorter sentence. It was denied. He can still appeal to Pennsylvania Superior Court.

More 2013 Year in Review stories

MORE NEWS: Camden County Voters Trickle In As New Jersey Starts Early Voting For The First Time