FORT GREENE, Brooklyn – A witness captured on surveillance camera munching a slice of pizza while looking at a deadly wreck in Fort Greene and not helping the victims did nothing wrong, police said Monday.

The footage was obtained by DNAinfo and shows the moments just before and after Sunday’s fatal crash.

It happened about 5:30 p.m. near South Portland Avenue and Fulton Street in Fort Greene, police said. A driver swerved onto the sidewalk, hitting three pedestrians — one of them fatally — while trying to avoid slamming into a bus that had slowed down in front of him, authorities said.

The mystery woman stepped out of a nearby pizza shop just as the deadly chain of events was unfolding.

Moments after she leaves the restaurant, slice in hand, an SUV barrels onto the sidewalk behind her, striking a trio of pedestrians. All three pedestrians – a 30-year-old woman, a 37-year-old man and a 75-year-old woman – were taken to the hospital, where the youngest victim – Victoria Nicodemus – was pronounced dead.

The witness slows down to look behind her at the wreck, then keeps walking, the video shows. A few steps later, she again turns around to see what happened – this time while taking a bite of the pizza slice. That's when multiple other witnesses swarm the scene.

The man behind the wheel of the SUV, Marion Sewell, was arrested and faces charges of driving without a license and driving without insurance, police said.

An NYPD spokesman told PIX11 News Monday the mystery witness was not legally obligated to render aid.

While it’s clear this woman was within the letter of the law, the bizarre video sparked a conversation online about whether a witness to such a devastating scene has a moral obligation to help.

What do you think? Let us know by commenting in the Facebook post, below.