The Animal Liberation Front issued a release claiming that it on May 19 stole several hundred rats, mice and 20 chickens from a facility in Uppsala, Sweden, that bred the animals for medical research purposes.
According to the ALF release,
After the animals had been liberated, as much damage as possible were done: slogans sprayed all over the building and on vehicles outside, cages were destroyed, paint was poured over the floors and walls and other damage was done as well as documents taken.
Source:
Hundreds of animals liberated by Swedish ALF. Press Release, Animal Liberation Front, May 2004.