As many as 3 people were injured after a bomb concealed in a letter or a parcel exploded at Lidl’s headquarters in Neckarsulm, Germany on Wednesday.

Roughly 100 people were evacuated as the police cleared the building and used a sniffer dog to search for further explosives.

Two employees received minor injuries, while one was more badly hurt, according to German media. The building reportedly received little to no damage.

“We are deeply shaken by the incident and wish a full and speedy recovery to our colleagues,” Lidl said in a statement.

The police have said they are still currently searching for the potential perpetrators, and that Lild received no threats in the run-up to the attack.

They are investigating this latest explosion in relation to a parcel bomb which detonated on Tuesday 68 kilometers from this newest attack at a Capri Sun production plant.