The reliable papers - Washington Post, etc., put Luna in his office, leaving there sometime before midnight, driving alone toward PA, passing through an EX Pass on a highway in Delaware heading north toward PA. He withdrew cash from an ATM and got gas and was acting normally - not under duress - during those transactions. He was filmed by a camera at the ATM machine. A gas station attendant did not notice anyone with him, but also did not look directly into the car.
http://www.washingtonpost.com/wp-dyn/articles/A47733-2003Dec8.html
>>Luna left the Baltimore federal courthouse about 11:30 p.m. Wednesday in his silver Honda Accord. Sometime after midnight, he was recorded by an ATM camera in Newark, Del., and seemed to be acting normally as he withdrew money, a law enforcement official said.
A couple of hours later, it appeared to a worker that Luna was alone when he got out of his car at a gas station in King of Prussia, Pa., law enforcement sources said. <<
Luna left his glasses and cell phone in his office. No one knows why. Cell phone equipment (I assume a charger and the handsfree device) were found in his car, but not the phone itself.
The FBI website has a photo of Luna's car.
http://www.fbi.gov/mostwant/seekinfo/luna.htm
BTW, another Assistant United States Attorney was mysteriously murdered a two years ago - Thomas Wales, shot in his home in Seattle on October 11, 2001.
http://www.fbi.gov/mostwant/seekinfo/wales.htm