ERIE, PA. Authorities seek man seen near bomb site

A Missouri woman robbed a bank in an apparent copycat version.
ERIE, Pa. (AP) -- Federal authorities investigating the bizarre robbery in which a man died when a bomb locked to his chest exploded released the sketch of another man wanted for questioning Thursday.
A witness described seeing a white man wearing a Pittsburgh Steelers jersey and denim shorts walk out of the woods behind a neighboring store where Brian Douglas Wells was stopped by police and killed by the bomb while waiting for the bomb squad, said Pat Berarducci, a senior special agent and spokesman for the federal Bureau of Alcohol, Tobacco, Firearms and Explosives.
Berarducci said it was unclear whether the man, who was seen behind a Country Fair store about 10 minutes after Wells died, had any connection to the case, but investigators were asking for any information about him.
Looking for others
Authorities have said they don't believe Wells, 46, acted alone in the robbery of a PNC bank Aug. 28. But they are still trying to determine whether the pizza delivery man had been forced to rob the bank by someone who locked the bomb to his neck, as he told authorities, or whether he was a willing participant.
Wells told police someone had locked the collar, which appeared to have four keyholes, and apparently started a timer on the bomb.
Authorities have said Wells had a map and directions to four places where he was supposed to receive information and further instructions. They have declined to describe the significance of the directions -- such as whether each location led to a key to one of the locks in the collar.
Authorities were also seeking another man seen running through traffic about 45 minutes after Wells' death from a wooded area near one of the locations Wells had been instructed to visit.
FBI agents have said they know of no other similar case, at least in the United States. There have been cases of necklace bombs being placed on people in Colombia and Venezuela for ransom, though investigators are not sure there's any connection with this. They also won't say if there's any potential link with an episode of "CSI: Miami" from last season, in which a necklace bomb was put on a Colombian businessman.
Missouri robbery
However, in Missouri, a woman robbed a bank Thursday by saying she was "wired" around her neck in an apparent copycat version of the Erie events.
Police arrested a 49-year-old woman and said she did not have a bomb. "It looks as though the whole thing was a hoax," FBI spokesman Jeff Lanza said.
Lanza said Thursday's robbery of a Lathrop bank was committed by a woman wearing a device around her neck, dark glasses and an earpiece that appeared to be attached to a microphone in front of her mouth.
The woman demanded money and said she did not have much time, Lanza said. She also said a van with explosives was in front of a school. Police locked down the Lathrop school buildings and checked them but found no explosives.
A bank teller gave the woman an unspecified amount of money, which was recovered when she was arrested Thursday afternoon at her home, about 25 miles northeast of Kansas City. Police traced her from her license plate, which was noted by a bank employee.
Authorities said they think the woman, whose name had not been released Thursday afternoon, acted alone. Lanza said he expected federal charges to be filed against her today.