Police have released new photos possibly connected to Thursday’s Times Square explosion in the hope that they will help them catch the perpetrator.

Officials say the photos, which depict a man wearing a hooded jacket riding a bicycle, could be the biker who left an explosive charge near the Armed Forces recruiting station at around 3:45 a.m. Thursday morning.

One of the photos, shown above, was taken as the suspect rode eastbound on 38th Street shortly after the explosion.

Police also say a bicycle found in a dumpster near East 38th Street and Madison Avenue is believed to be the one the suspect used during the attack.

Police are offering a $12,000 reward for any information leading to an arrest and conviction.

Authorities also released video that shows a person on a bicycle passing the recruiting station around 3:40 a.m. Thursday with a blast of smoke visible seconds later.

Investigators are looking into whether the incident is related to explosions at the Mexican consulate last year, as well as one at the British consulate in 2005.

Governor Eliot Spitzer says he is hopeful that those behind the attack will be brought to justice.

"The cameras, we hope, and the evidence that is being accrued by the NYPD will hopefully take us towards resolving this,” he said. “The mayor has spoken to this and I think [Police Commissioner] Ray Kelly has as well. We will just have top watch and hopefully we will be able to solve this heinous crime."

Some letters sent to Capitol Hill were originally believed to be linked to the explosion, but have since been ruled out. They contained a ten-page political manifesto and what appeared to be a holiday card, with photo of a man in front of the recruitment center coupled and the words "Happy New Year, We Did It."

The Associated Press reports that the FBI found the sender of the letters in Los Angeles and concluded that they are not connected to the attack.

"There is no evidence linking the letters, which contained no threat, to the bombing," an FBI representative told the A.P.

A law enforcement official in Washington called the timing of the letters an "incredibly unbelievable coincidence" and said no charges were expected in connection with them.

Mayor Michael Bloomberg said Thursday afternoon that there is no reason to believe the attack was an act of terrorism.

Meanwhile, things are returning to normal at the site of the blast. Replacement doors were installed at the recruitment center Friday.

Anyone with information on either the suspect or the bicycle is asked to call Crime Stoppers at 800-577-TIPS.

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