One person with Islamist links has been detained in relation to the attack on the Borussia Dortmund team bus, according to a representative for federal prosecutors.
Investigations have also uncovered another suspect, but they have not been detained, according to The Local. The apartments of both suspects have been searched.
Prosecutors are now considering whether to apply for a full arrest warrant for the suspect who is currently in detention.
Police are currently investigating a possible Islamic extremist link to the explosions which took place yesterday (April 11).
A letter was found near the location of the explosions, which is said to claim athletes are now targets for attacks by Islamic State, as well as referencing the truck attack carried out in Berlin in December. However the provenance of the letter has not been officially verified.
Another letter was also found, which the German Press Agency says criticises Dortmund for its failure to tackle racist abuse. It could be linked to an anti-Nazi group.
The bus was travelling to the Champions League match between Borussia Dortmund and Monaco when threee explosions took place.
The match has now been postponed until today (April 12) due to the explosion. Dortmund defender Marc Bartra was injured in the attack.