A man is being questioned in connection with the fatal shooting of UnitedHealthcare CEO Brian Thompson, according to Sky News’ US partner NBC News.

Customers in a branch of McDonald’s in central Pennsylvania thought the man was “suspicious” and called police, NBC said, quoting three senior law enforcement officials.

When officers arrived, they found the man had a fake ID, and he was taken to a police station for questioning, two senior law enforcement officials told the network.

Brian Thompson shooting – what we know

Image:
Police searching Central Park. Pic: AP

A map showing the suspected gunman's movements after the shooting of Brian Thompson
Image:
A map showing the suspected gunman’s movements after the shooting of Brian Thompson

Once there, they discovered he had a gun similar to the one used in the killing of Brian Thompson, a silencer, and a fake New Jersey ID, the two sources said.

The suspect is being questioned in Altoona, around 100 miles east of Pittsburgh, according to sources, NBC said.

One of investigators’ lines of enquiry is whether he had recently travelled there by bus from Philadelphia, a senior law enforcement official told NBC.

More from US

Mr Thompson was shot dead by a masked gunman outside a Manhattan hotel on Wednesday morning, while he was on the way to the company’s annual conference.

Footage showed the attacker walking up slowly behind Mr Thompson and opening fire outside the Hilton hotel in what New York Police Commissioner Jessica Tisch described as a “premeditated, preplanned targeted attack”.

Shell casings found at the scene where the executive was killed had “deny,” “delay” and “depose” written on them.

The gunman fled on foot, then on a bike into Central Park, New York City police have said, as they launched a citywide manhunt.

In the park, detectives found a grey backpack they believe he used, containing bank notes from the Monopoly board game, as well as a jacket which may have been worn by the gunman, NBC said on Sunday, quoting sources.

The man took a taxi to an Upper Manhattan bus station from where he could travel to New Jersey, Philadelphia, Boston, and Washington DC, New York’s chief of detectives, Joseph Kenny, said on Sunday.

New CCTV has emerged showing a suspect coming out of a nearby subway station. It is said to have been filmed at 6.15am – about half an hour before the shooting on Wednesday.

A police officer stands near the scene where the CEO of United Healthcare Brian Thompson was reportedly shot and killed in Midtown Manhattan, in New York.
Pic Reuters
Image:
A police officer stands near the scene. Pic Reuters

Police search Central Park after shooting of Brian Thompson
Image:
Police divers search Central Park. Pic: AP

In the video clip, taken from cigar shop Davidoff of Geneva on Sixth Avenue, the man can be seen walking up some stairs to street level.

Read more:
Trump gushes over ‘handsome’ William
Record $765m for sports star
Shooting prompts US healthcare debate

It’s about three minutes’ walk from where Mr Thompson was killed, outside his company’s annual investor meeting at a hotel near Radio City Music Hall and the Rockefeller Centre in midtown Manhattan.

The gunman travelled to the city by bus from Atlanta, and investigators are searching for video from that bus station and others along the Greyhound Bus route, three sources close to the investigation told NBC.