CLEARLAKE, Calif. – The Clearlake Police Department is investigating two assaults from the past week, one involving a possible attempted robbery, where the victims were stabbed by juvenile assailants.

The juveniles involved in the incidents so far have not been identified, and Sgt. Nick Bennett said Thursday that it's unknown if the two incidents are linked.

Bennett said the first incident occurred this past Sunday at approximately 6:20 p.m., when a victim was approached by three unknown male juveniles who demanded his money and jewelry.

When the man refused, one of the males brandished a knife and stabbed the victim in the back, according to Bennett.

The victim was treated by Lake County Fire Protection District medics and transported to St. Helena Hospital Clear Lake, Bennett said.

The second incident occurred on Tuesday at approximately 1:20 a.m., when a victim was walking by the J&L Market on Old Highway 53 and contacted by two unknown male juveniles, Bennett said.

The second victim also was struck in the back by some type of sharp stabbing instrument. Bennett said the victim also was treated at the scene by Lake County Fire Protection District medics then transported to St. Helena Hospital Clear Lake.

Bennett said the city of Clearlake has curfew in effect. The curfew rules state that juveniles are not to be out without parental supervision after 10 p.m. on weeknights.

Anyone with any information regarding the Sunday stabbing is encouraged to contact investigating Officer Mike Dietrick at 707-994-8251, Extension 502; information about the Tuesday case should be shared with Officer Aaron Winslow at 707-994-8251, Extension 503.

Clearlake Police Department encourages citizens to report any suspicious activities by calling 707-994-8251, then press 1.