Investigators yesterday carried out numerous searches based upon the flood of information.

Police earlier suspected that Lewis used his mother's pistol to kill Cassidy . She told police she discovered the 9mm semiautomatic handgun was missing on Saturday only after detectives questioned her about her son's alleged involvement in the officer's killing.

But police said neither gun recovered yesterday matched the description of the mother's pistol.

Lewis, who attended Olney High School only a few blocks from his mother's house on Roosevelt Boulevard, was charged in 2005 with possession of drugs and possession with intent to distribute. He was placed in a treatment program, which he completed in February.

Four months later, Lewis was arrested again on drug charges. That case is pending. Lewis had a scheduled court appearance on Friday.

The unmarried Lewis has two younger sisters and a 3-month-old daughter, Natasha, according to his family.

Earlier this year, Lewis worked at two other Dunkin' Donuts locations - at Germantown and Erie Avenues, and on Roosevelt Boulevard near Rising Sun Avenue.

"He was nice," said Kiani Clark, 20, a cashier at the Boulevard location.

"He was polite. He was happy he had just had a baby," she said while ringing up customers.

"We were all in shock," said Megan Chin, the manager.

Lewis was let go a few months ago for unspecified reasons, said Sofia Gonzalez, 23, a coworker who said she has known Lewis since they were schoolmates at Olney High School.

"I believe it was money problems that pushed him over the edge," said Gonzalez, who said she did not think he would stage an armed robbery at another Dunkin' Donuts out of spite.

"He wasn't the type to hold a grudge like that," she said. "He just had issues. "

And in the alleys near the Roosevelt Boulevard home of Lewis' grandmother Vernetha Glover Henry, plainclothes detectives scoured the grounds while the suspect's relatives congregated outside and professed the young man's innocence.

"The cops have the wrong person," said Chantelle Bennett, a cousin who complained that the news of the arrest warrant had harmed Glover Henry's day-care business.

Lewis sometimes spent time with the children, Bennett said.

Janice Torrence Glover, 17, an aunt to Lewis, speculated that maybe he should not surrender. He has been convicted in the public's eye, she said, and "it could be dangerous for him. "

She doubted that he killed the police officer. "He's too goofy to pull the trigger," she said.

Adding Lewis to the FBI's "Ten Most Wanted" list would give "the case more national prominence and involve the FBI's national resources," said agency spokeswoman Jerri Williams.

Contact staff writer Andrew Maykuth at 215-854-2947 or amaykuth@phillynews.com.