Police arrested and charged a Brooklyn man with second-degree murder Tuesday in the stabbing death of a city bus driver.

Authorities arrested Horace Moore, 20, after questioning him in the 81st Precinct station house in Brooklyn Tuesday afternoon.

According to the Associated Press, Moore confessed to the stabbing, which happened around noon Monday on the B46 bus on Gates Avenue and Malcolm X Boulevard in Bedford-Stuyvesant.

Witnesses also identified Moore in a line-up.

Moore, shown above in the center, did not answer questions as he was lead way from the 81st Precinct Tuesday.

Moore allegedly boarded the bus and tried to swipe an invalid MetroCard. The driver, Edwin Thomas, allowed Moore to board, but the two soon began arguing when the passenger asked for a free transfer.

Thomas, 46, allegedly refused to give Moore one, since the man had not paid. Police say Moore then punched and stabbed Thomas in the head and stomach before running off.

Thomas was taken to Woodhull Medical Center where he died. He had worked as a bus driver for seven years.

"Bus operator Thomas was killed in the line of duty serving the people of New York City," said MTA Executive Director and Chief Executive Officer Elliot "Lee" Sander. "Our thoughts and prayers go out to the Thomas family and this is an extraordinary tragedy for the city and for the MTA."

"He was provoked and felt no other recourse of action and he probably was just trying to secure his safety," said co-worker Cesar White. "And unfortunately, it didn't turn out in his best interest and it's a sad thing."

Thomas is the first bus driver to be killed on the job since 1981. The Haitian-born immigrant is survived by a son and daughter.

At a Tuesday night vigil held at the bus stop near the site of Thomas's stabbing, the driver's friends and co-workers fondly recalled the victim and tried to make sense of the crime.

“This is something that you really don’t expect to happen,” said MTA worker Arnold Watson. “It’s not an everyday occurrence, and the reason why it happened is insane.”

"This was a dedicated worker, doing service to the community,” said community advocate Roy Antoyne. “He has two beautiful kids. A man who gives service to the community shouldn’t be slaughtered like a pig."

“It was very important, because you know what? We’ve got to let them know the love is still there and we’re there for them as a family,” said Swan Williams, Thomas’s friend.

"Mr. Thomas was a faithful employee," said fellow Metropolitan Transportation Authority worker Louretha Carter. "He was never out sick. He was quiet. He came to work. He picked up his work. You didn't hear anything out of him."

In September, the MTA revealed the B46 route had the most fare evaders of any route in the city – with an average of 4,000 people a week boarding without paying.

His death is leading for calls for more protections for drivers – including more surveillance cameras and an increased police presence on city buses.

"We're calling on the New York City Transit Authority, we're calling on the mayor of New York City, and we're calling on the governor to institute policies that will offer up opportunities for our bus drivers and conductors on trains to be safe," said Anthony Herbert of the Urban Community Council at a news conference Tuesday. "We're asking for you to activate initiatives that will allow police officers to ride the bus a couple of stops so there is a presence given."

The NYPD, the MTA, and the Transport Workers Union are offering rewards totaling $36,000 for any information leading to a conviction.

Anyone with information is asked to contact Crime Stoppers by calling 1-800-577-TIPS, by texting TIP577 to CRIMES, or by going to NYPDCrimeStoppers.com.