A train-bombing suspect appeared in court on Sunday in the German city of Karlsruhe one day after he was arrested in the northern city of Kiel.

Youssef Mohammed, a 21-year-old Lebanese student, was charged of attempted murder, a member of a terrorist organization and attempting to cause an explosion.

The suspect was flown by a helicopter to Karlsruhe, a city in the state of Baden-Wrttemberg in the southwest of Germany.

Reports reaching here quoted German Federal prosecutor Monika Harms as saying that Youssef Mohammed's fingerprints and DNA matched that taken from one of two abandoned suitcases.

The suspect, who came to Germany two years ago, was arrested in Kiel on Saturday, one day after the publication of images of the two persons believed to be part of a failed terrorist attack on German trains.

The two suitcases containing bottles of gasoline, propane gas and a detonating device were found abandoned in German regional trains on July 31.

The two 25-kilogram suitcase bombs were deposited by train guards at lost-and-found offices in Koblenz and Dortmund. They failed to explode just because of an error by the bomb maker

They were primed to go off and kill a "high number" of people, Federal Prosecutor Rainer Griesbaum told a press conference in Wiesbaden on Friday when releasing the images of the two suspects.

German Interior Minister Wolfgang Schaeuble warned on Friday that attempted acts of terror would possibly be repeated.

"We have to take this event very seriously," he said in a faxed statement. "We have to expect that the danger of a repeated attempt still exists."

On Saturday, speaking to the German TV ZDF, Schaeuble warned again that the security situation in Germany was so serious. "The threat has never been so close. We do not know what could still happen."

Police are still searching for Youssef Mohammed's complice. A reward of 50,000 euros (64,000 dollars) have been warranted for information leading to the arrest of the men who planted the bombs.

Editor: Yan