The incident occurred at 5 p.m. on Monday. The helicopter crew alerted the police when they landed in Uppsala.
– No one has been injured, but green lasers can be very harmful to the eyes, says Pelle Vamstad, police officer at police region Mitt.
The police have interviewed the helicopter crew. A report of aviation sabotage, violation of the Radiation Protection Act and attempted assault has subsequently been drawn up.
It is unclear if any patients were on board.
At this time, there are no suspects.