"The doctor told me he had suffered so much damage to the brain that he would not wake up anymore," says Dennis Kallin, one of Robert's brothers.

Two people in Vilhelmina have recently died and at least five people in Umeå have been hospitalized following overdoses of an as yet unknown drug. The police suspect that everyone has taken the same preparation and is seriously considering the situation - in the worst case, more overdoses and deaths can occur.

Robert Kallin's family believes that it is important to dare to talk about drug abuse in order to bring about a change in society. Hear them tell in the clip.