An Epsom party that reportedly became “out of control” ended with the stabbings of three people, all of whom were brought to hospitals in Concord.

One teenage victim from Epsom remained in critical condition on March 30 in the Concord Hospital after sustaining multiple stab wounds from an Allenstown assailant at about 2:45 a.m. on Saturday, March 28.

Merrimack County Attorney Katherine Rogers confirmed that Mitchell Rideout, 18, of Allenstown, was arraigned in Concord District Court on Monday, March 30, and has been charged with one count of first degree assault and one count of illegal possession of alcohol.

Rogers said Rideout is being held on $1 million bail at the Merrimack County jail. A probable cause hearing is scheduled for April 6 at Concord District Court. If probable cause of the attack is established, the case will be transferred to Merrimack County Superior Court.

Rideout’s victim, whose identity has not been released by authorities because of the ongoing investigation, reportedly sustained multiple stab wounds and remains on the critically injured list at the hospital, where she was taken after the attack.

Rogers refused comment on the nature of the teenager’s wounds or the specific locations of the entry points.

Two other victims who also sustained stab wounds were transported to the Concord hospital on Saturday morning; one of those victims was later transferred to Dartmouth Hitchcock hospital in Concord. The identities of those two victims remain confidential, too. More information is expected to be released as investigators continue to unravel the case.

All three victims were reportedly close in age to Rideout – in their late teens or early 20s.

As of March 30, Rideout had not been charged with multiple counts of assault but Rogers confirmed that more charges could be forthcoming. She said it is still unclear whether Rideout was the only assailant. It is possible there was more than one attacker involved, she added.

Epsom police continue to investigate the incident but exact details of the circumstances remain unclear. Police Chief Wayne Preve reported that the attacks occurred at a party at 199 Mountain Road that “got out of control.”

Rogers reported that police determined Rideout had been illegally consuming alcohol at the time of the attacks.