"The policemen stood and watched the evidence disappear into the sky," said Gustafsson.
via Gfycat
Another police spokeswoman, Camilla Fogelhamre, told Expressen that "I've heard a lot during the years I've worked in the police, but never anything like this".
"We did not spend any major resources on finding the right seagull. It was a little difficult to follow and we did not deploy a helicopter."
The woman smoking the joint did not fare so well, with officers arresting her in what police described as "a patch over the wound".
While all animal species process intoxicants differently, no peer-reviewed studies have been completed into the effects of THC on birds.
Studies have shown, however, that birds are much more susceptible to toxins in smoke due to their bodies having very efficient respiratory systems which extract much more air particulates than humans.