"So a seizure was made in connection with the forensic examination, which initially related to the fire and explosion. Then, more or less so to speak, the forensic scientists fell over a batch of narcotics, says Torsten Angervåg, chief prosecutor at the Norrköping Prosecutor's Office.

The 21-year-old is a resident of Malmö and, according to the prosecutor, has not been in Norrköping for any length of time. It should also be about different types of drugs that the technicians found.

How come the drugs didn't burn?

"The drugs were in a part of the apartment that was not so badly affected by the fire.

Is the fire investigated and ready now?

"It's not done yet, but the fire technicians and forensic scientists have worked at an incredibly impressive pace and have come a very long way despite the fact that it is a complex investigative issue," says Torsten Angervåg.

Watch and hear more in the video above.