Rats were blamed by police in India for burning roughly 200kg of cannabis seized from criminals and housed in police stations.
A court heard how the rats had eaten marijuana that was being kept as evidence in some cases.
The judge highlighted three instances in which rodents damaged marijuana.
A statement read to the court said: “Rats are tiny animals and they have no fear of the police. It’s difficult to protect the drug from them.”
Judge Sanjay Chaudhary said in an order that when the court asked the police to produce the seized drug as evidence, it was told that 195kg of cannabis had been “destroyed” by rats.
In another case involving 386kg of the drug, the police filed a report saying “some” of the cannabis was “eaten up by the rats”.
Judge Chaudhary told the court around 700kg of marijuana seized by the police was lying in police stations in Mathura district and that “all of it was under danger of infestation by rats”.
He said the police had no expertise in dealing with the matter as the rats were “too small”. The only way to protect the seized goods from “such fearless mice”, he added, was to auction the drugs to research labs and medicine firms, with the proceeds going to the government.
In 2018, eight Argentinian police officers were fired after they blamed mice for the disappearance of half a ton of cannabis from a police warehouse.
But experts disputed the claim, saying that the animals were unlikely to confuse the drug for food and “if a large group of mice had eaten it, a lot of corpses would have been found in the warehouse”.