Frisk was born on 18 February 1963 in the Swedish city of Gothenburg, and lives in Mölndal, his hometown, where he runs a historic cinema.
In addition to refereeing at the highest level, Frisk also acts as an ambassador for the UEFA/International Committee of the Red Cross campaign highlighting the plight of children in war.
He travelled to Sierra Leone for a first-hand view of the ICRC's work, and declared himself deeply moved by the scenes of reunited families.
In September 2004, Frisk was forced to abandon a match he was refereeing between Roma and Dynamo Kyiv at the Stadio Olimpico in the group stage of the 2004–05 Champions League after he was hit by a coin thrown from the stands as he walked off the field at half-time.
[4] UEFA eventually awarded the match to Kyiv as a 3–0 forfeit, and ordered that Roma play its remaining two home fixtures in the group stage behind closed doors.