Frank James, the lone suspect in the Brooklyn subway shooting that wounded 10 people, purchased the gun used in the attack at a pawn shop in Ohio, Fox News has learned.

James, 62, purchased the 9 mm Glock handgun at a pawn shop in Columbus, Ohio, in 2011, a law enforcement source told Fox News on Wednesday.

MANHUNT FOR BROOKLYN SUBWAY SHOOTER: LIVE UPDATES

James remained on the run Wednesday morning, more than 24 hours after authorities say he put on a gas mask, detonated a smoke grenade and fired off at least 33 rounds inside the crowded 36th Street subway station in the Sunset Park neighborhood as the Manhattan-bound N train pulled in.

Frank James, the lone suspect in the Brooklyn subway shooting that wounded 10 people, purchased the gun used in the attack at a pawn shop in Ohio, Fox News has learned.

Frank James is wanted as the suspect in the Brooklyn subway shooting on Tuesday morning. (NYPD)

As the manhunt continued, New York City wireless phone users received an emergency citywide alert just before 10:30 a.m. Wednesday that warned the public to be on the lookout for James.

"WANTED for Brooklyn Subway Shooting: Frank James, Black male, 62 years old. Any information can be directed to NYPD TIPS at 800-577-TIPS (8477)," the alert said.

A gunman filled a rush-hour subway train with smoke and shot multiple people Tuesday, leaving wounded commuters bleeding on a platform as others ran screaming, authorities said

Emergency personnel gather at the entrance to a subway stop in Brooklyn, New York, Tuesday, April 12, 2022. (AP Photo/John Minchillo)

Meanwhile, the FBI is investigating social media posts and videos that authorities believe are linked to James, a senior law enforcement source confirmed to Fox News on Wednesday.

Fox News Digital viewed a string of rambling, profanity-laced YouTube videos in which a man who is apparently James decries the United States as a racist, violent place. The source said that some of James' posts were critical of New York City Mayor Eric Adams.

This photo provided by Will B Wylde, a person is aided outside a subway car in the Brooklyn borough of New York, Tuesday, April 12, 2022. A gunman filled a rush-hour subway train with smoke and shot multiple people Tuesday, leaving wounded commuters bleeding on a Brooklyn platform as others ran screaming, authorities said. Police were still searching for the suspect. (Will B Wylde via AP)

A person is aided outside a subway car in Brooklyn, New York, Tuesday, April 12, 2022. (Will B Wylde via AP)

Police said five of the gunshot victims were in critical condition but all 10 wounded in the shooting were expected to survive. At least a dozen others who escaped gunshot wounds were treated for smoke inhalation and other injuries.

CLICK HERE TO GET THE FOX NEWS APP

Police announced a $50,000 reward for information in the case.

Anyone with information is asked to call New York City Crime Stoppers at 1-800-577-TIPS.

Fox News’ Danielle Wallace contributed to this report.