Police removed a 250-pound piece of an airplane wing from near the World Trade Center that is believed to be part of a 9/11 jetliner.

The piece, which was found last week, was taken into police custody.

A dozen police officers worked for two hours Wednesday to lift the 5-foot-long chunk of debris from the 18-inch-wide alley, according to reports.

They then wheeled it onto the street and loaded it into a pickup truck to take it to the NYPD property clerk's office in Brooklyn.

“It’s a piece of history, and we tried to preserve it as best we could,” said NYPD Deputy Chief William Aubry, who leads the forensic investigation division.

Aubry said no damage was caused to the piece when it was removed.

According to reports, it has not yet been determined whether the part came from American Airlines flight 11, which hit the north tower at 8:46 a.m., or United flight 175, which hit the south tower at 9:03 a.m. 

About 3,000 people died in the attack, and 1,000 were never identified.