Borussia Dortmund felt “completely ignored” over the rescheduling of their Champions League game against Monaco, says manager Thomas Tuchel.

Police arrested a 28-year-old German-Russian citizen Friday suspected of carrying out an attack on the Borussia Dortmund soccer club last week.

The suspect, identified only as Sergej W., is not thought to have ties to international terrorism but may have been speculating on the club’s share price, German media reported.

Federal investigators said that on April 11, the day of the attack, the suspect acquired 15,000 shares in Borussia Dortmund in a transaction that bet that club’s stock price would fall.

A significant drop in the club’s share price could have been expected if several players had been seriously injured or even killed. A Dortmund player and a policeman were injured in the triple blasts as the bus headed to the team’s stadium for a UEFA Champions League match against AS Monaco.

Investigators found notes at the scene claiming responsibility in the name of Islamic extremists, but quickly doubted their authenticity.

Prosecutors said the suspect stayed in the same hotel as players from the club and placed three explosives along the bus’ route.

“The explosive devices were detonated at the optimum time,” prosecutors said.

The suspect, who was arrested in the Tuebingen area, south of Stuttgart, faces charges of attempted murder, causing an explosion and serious bodily harm.

Contributing: The Associated Press

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