The Health and Social Care Inspectorate decided to hand the cases over to Police and prosecutors who will determine if they warrant prosecution.
Last fall, Swedish Radio's investigative news program Kaliber reported that, against their will, deportees had received injections of Diazepam, a sedative drug once markted under the name Valium.
Kaliber examined 33 reports about deportations, which occurred from 2010 to 2014. They found seven instances in which deportees were given sedative injections. The deportees were described in the reports as "aggressive" or at risk for harming themselves or others.
But Swedish Radio reported that unless a person is in the legal custody of a psychiatric ward, it is illegal in Sweden to administer sedative injections if the person does not agree to it.
"In psychiatric care you can give injections against a person's will," said Fredrik Fridholm, an inspector from the Health and Social Care Inspectorate. "There are regulations about what you can do on an airplane, and it's the captain who decides if there is an emergency."
Was that the case for the incidents in question?
"In certain cases we have come to that conclusion that it's possible that a crime has been committed, and we have handed that over to the police," he said.