Explosions in Germany

German prosecutors say the man responsible for last week's bomb attack on the bus carrying the Borussia Dortmund soccer team had bought options to short sell 15,000 shares of the club's stock before the attack, hoping to make a profit from the carnage if share prices fell as a result.

She said the man came to the attention of investigators because he had made "suspicious options purchases" for shares in Borussia Dortmund, the only top-league German club listed on the stock exchange, on the same day as the April 11 attack.

W. had taken out a loan of "several tens of thousands of euros" days before the attack and bought a large number of so-called put options, betting on a drop in Dortmund's share price, she said.

"A significant share price drop could have been expected if a player had been seriously injured or even killed as a result of the attack," according to prosecutors, though Koehler said the precise profit W. might have expected was still being calculated.

Prosecutors said that the suspect had taken out a loan and bought a large number of so-called put options for shares of Borussia Dortmund, betting on a drop in the share price after the attack.