Prosecutors in Germany are investigating a possible link between three recent letter bomb attacks on German food retail companies. “We assume there is a connection,” state prosecutors in Heidelberg said on Friday after attacks on a supermarket chain, a drinks company and a baby food producer this week. They said further attacks were not likely but could not be ruled out entirely. Prosecutors announced a 100-person special commission to investigate the attacks on Thursday. They confirmed that an explosive had been identified and disarmed at a parcel distribution centre at Munich airport on Wednesday night. The parcel was addressed to the Bavaria-based baby food company Hipp. Three people were taken to hospital on Wednesday when a letter bomb exploded at the German headquarters of the discount supermarket Lidl. Around 100 people were evacuated from the building in Neckarsulm, western Germany. A similar explosion was reported in nearby Eppelheim at the Wild drinks company, whose products include Capri-Sun. According to the national DPA news agency, Germany’s food federation has warned its members to remain vigilant when receiving post.