DAMASCUS, Syria — An American who turned up in Syria on Thursday says he was detained after crossing into the country by foot on a Christian pilgrimage seven months ago.

Travis Timmerman appears to have been among thousands of people released from the country’s notorious prisons after rebels reached Damascus over the weekend, overthrowing President Assad and ending his family’s 54-year rule.

As video emerged online of Mr. Timmerman on Thursday, he was initially mistaken by some for an American journalist who went missing in Syria 12 years ago, Austin Tice.

In the video, Mr. Timmerman could be seen lying on a mattress under a blanket in what appeared to be a private house. A group of men in the video said that he was being treated well and would be safely returned home.

This year, a Missouri State Highway Patrol bulletin identified him as Pete Travis Timmerman, 29, and said he had gone missing in Hungary in early June. In late August, Hungarian police put out a missing persons announcement saying that Mr. Timmerman was last seen at a church in Hungary’s capital, Budapest.

Missouri court records indicate that Mr. Timmerman is from Urbana, Missouri, about 50 miles north of Springfield in the southwestern part of the state.

There was no immediate comment from American officials traveling with Secretary of State Blinken at Aqaba, Jordan.

Mr. Timmerman later gave an interview with the Al-Arabiya TV network, saying he had illegally crossed into Syria on foot from the eastern Lebanese town of Zahle seven months ago before being detained.

He said that he was treated well in detention but could hear other young men being tortured.

“It was OK. I was fed. I was watered. The one difficulty was that I couldn’t go to the bathroom when I wanted to,” he said. He said he was only allowed to go three times a day.

“I was not beaten and the guards treated me decently,” he added.

The American government’s top hostage negotiator, Roger Carstens, traveled to Lebanon earlier this week in hopes of collecting information on the whereabouts of Tice.

President Biden has said his administration believed Tice was alive and was committed to bringing him home, though he also acknowledged on Sunday that “we have no direct evidence” of his status.

Tice, who has had his work published by The Washington Post, McClatchy newspapers and others, disappeared at a checkpoint in a contested area west of Damascus in August 2012 as the Syrian civil war intensified.

A video released weeks after Tice went missing showed him blindfolded and held by armed men. He hasn’t been heard from since. Assad’s government had denied that it was holding him.