A man accused of stabbing six people at a quinceañera party in the Yolo County town of Madison in October has been convicted of mayhem and assault with a deadly weapon.

A jury on Friday found Daniel Portugal, 18, guilty of one count of mayhem and six counts of assault with a deadly weapon as well as several allegations of great bodily injury, according to a Yolo County District Attorney’s Office news release. The jury was unable to reach a verdict on three allegations of great bodily injury.

On Oct. 17, Portugal, who is from the town of Madison, entered the quiceañera party at the Madison Town Hall. As the party was winding down, two of the victims were having their photo taken with a 3-year-old boy. Portugal approached without warning and slashed one of the people across the neck. He then turned on the other person and repeatedly stabbed her about the head and upper torso, authorities said.

A band member tackled Portugal, forcing him to the ground to prevent other people from being injured. One partygoer, thinking it was a fistfight, intervened and Portugal stabbed him in the leg. At the same time, security personnel arrived. One member of the security team moved in to see what was going on and Portugal stabbed him in the abdomen.

Two other men at the party were finally able to gain control of Portugal and the knife was taken from him.

Two of the victims were taken by air ambulance to UC Davis Medical Center and four others were transported to Kaiser Vacaville Medical Center.

Portugal is to be sentenced May 10 before Yolo Superior Court Judge David Rosenberg, who presided over the trial.