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Michael Probst, File, Associated Press
FILE - In this March 2, 2011 file photo police investigate the scene after a gunman fired shots at U.S. soldiers on the bus outside Frankfurt airport, Germany. Prosecutors are asking for a sentence of life in prison for the alleged Islamic extremist who has admitted killing two U.S. airmen at the Frankfurt airport last year. The dapd news agency reported that Prosecutor Jochen Weingarten told the Frankfurt state court in closing arguments Monday Jan. 9, 2012 that Arid Uka deserved the maximum possible sentence due to the brutal nature of the crime. The 21-year-old ethnic Albanian from Kosovo confessed as the trial opened to killing two men at point-blank range before wounding two more airmen and taking aim at a third before his gun misfired. Under German law the court still has to review all the evidence. A verdict is expected on Jan. 19.

FLAGSTAFF, Ariz. — Authorities are expected to release more information Tuesday about a possible link between the fatal shooting of a sheriff's deputy near Phoenix and a New Hampshire couple found dead in their car in northern Arizona.

Maricopa County Sheriff's Deputy William Coleman was gunned down Sunday at a north Phoenix medical building while answering a burglary call. A man got out of a van and opened fire.

On Friday, James Johnson of Jaffrey, N.H., and Carol Raynsford of Nelson, N.H., were found dead in a sedan at a remote highway turnout near Sedona.

The New Hampshire friends' deaths have baffled authorities and led to speculation that the killings could've been committed by Drew Ryan Maras, who died in Sunday's shootout with officers in Phoenix.

Similar guns are believed to have been used in both cases, and the crimes are connected by Interstate 17.