Saxony’s Interior Minister Armin Schuster has described the situation as as a “very serious security incident”.
German authorities have given no other details.
But Ukraine’s Ambassador to Germany Oleksii Makeiev told Welt TV: “Who else could it be but Russia?”
Russia has not commented.
In July 2024 a parcel burst into flames on the ground at Leipzig/Halle Airport before it could be loaded onto a DHL cargo plane, one of a series of parcel fires that targeted the UK and EU countries.
There are suspicions it could have been sabotage linked to Moscow.
The parcels had contained explosive devices that were set off by electronic timers hidden in vibrating massage pillows, according to authorities.
Russia has denied any involvement in those incidents.
Last year a Chinese woman was convicted for passing on information about flight schedules and cargo movements at Leipzig/Halle Airport to a man spying for Beijing.