Police have released details of a "person of interest" they are searching for following a shooting on a rush-hour subway train in New York.
Frank R James, 62, with addresses in Philadelphia and Wisconsin, is believed to have rented a van police say could be connected to the shooting, although they have not confirmed James's role in the attack.
The key to the van was recovered at the scene, officers said.
Videos posted on social media, apparently by the same man, use black nationalist rhetoric, violent language and bigoted comments, some of them aimed at other black people.
Several of the videos mention the city's subways, and New York City Mayor Eric Adams is a recurring theme.
The shooting happened at 8.24am on Tuesday, on the second carriage of a Manhattan-bound subway train between 59th Street and 36th Street stations.
The gunman wore a surgical mask and a construction vest, and set off two smoke canisters before shooting 10 people, New York's police commissioner Keechant Sewell said.
A further 13 people were injured in the aftermath of the attack - either through smoke inhalation or in the rush to escape, she added.
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All of those injured are expected to recover.
Authorities are offering rewards totalling $50,000 for information leading to the arrest of a suspect.
Ms Sewell said the attack was not being investigated as terrorism but that the motive was still unclear and she was "not ruling out anything".
Police investigators found a 9mm semi-automatic handgun at the scene, along with extended magazines, a hatchet, both detonated and undetonated smoke grenades, gasoline and the key to the U-Haul van.
Witness Sam Carcamo told radio station 1010 WINS:
"My subway door opened into calamity.
"It was smoke and blood and people screaming."
Juliana Fonda, a broadcast engineer at WNYC-FM, told its news site Gothamist that passengers from the car behind hers started banging on the connecting door.
"There was a lot of loud pops, and there was smoke in the other car," she said.
"And people were trying to get in and they couldn't, they were pounding on the door to get into our car."
Mayor Eric Adams said:
"Killers are using weapons of mass destruction to kill innocent people.
"Ending gun violence means changing gun laws.
"We cannot clean up a flood when water is still pouring into the basement.
"We cannot stop until the peace we deserve becomes the reality we experience."
One of the videos apparently posted by Frank R James - in February - said a government plan to address homelessness and safety in the city's subway system was "doomed for failure".
He also referred to himself as a "victim" of the mayor's mental health programme and criticised Mr Adams' plan to end gun violence.
Ms Sewell described the videos as "concerning".
Security for Mr Adams has been tightened.
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