The incident has left the police feeling a bit codsmacked after the bizarre tale was reported. According to the police report the man was sound asleep in his apartment when the fishy assault took place, according to the local Södermanlands Nyheter newspaper
His peaceful nap was rudely interrupted when the woman smacked him across the face with a mackerel. Unsurprisingly, the man woke up but the battering wasn't enough to send him to sleep with the fishes so he filed a report to the police instead.
In addition to the mackerel attack he alleged that the woman had pinched food from his fridge and also stolen 2,000 ($310) kronor from him. It remains unclear how the woman entered his apartment to deliver his late night snack attack.
The two people, who are both in their 60s, are understood to be known to each other.
"They might live together sometimes," Mikael Larsson of the Nyköping police told the paper.
A preliminary investigation is already underway with the mackerel attack currently classified as assault.