One of three teens charged in an alleged plot to attack a Middle Sackville high school last month is about to be released from jail.

Jonathan Murray, 18, made a brief appearance in Nova Scotia Supreme Court Wednesday morning to finalize plans for his release.

He's been in custody since his arrest April 5 outside Millwood High School. The school was put in lockdown that day after a tip came into RCMP.

Officers found a duffel bag in woods near the school. It contained two long guns, two BB-type guns and some ammunition.

Parents post a $15,000 surety

Murray is being released into the care of his parents who are posting a $15,000 surety to ensure he abides by the conditions of his release.

Those conditions include that he live at his parents' suburban Halifax home under house arrest. He must stay away from Millwood High and a list of potential witnesses for his trial on charges of conspiracy to commit murder and uttering threats.

Murray was initially charged with threatening a school vice-principal, Cathy Burton, according to court documents.

But RCMP say after further investigation they now allege Murray "was planning to commit a violent act at the school."

Police did not say who the intended target or targets is alleged to have been.

Also facing child-luring charges

Murray is also facing child-luring charges, but those are not related to the high school incident.

Murray is to appear in Dartmouth provincial court tomorrow to answer to the luring charges and confirm his release conditions.

Two other teens are facing weapons and conspiracy charges in relation to the alleged plot at Millwood High.

Neither of the other two teens can be identified because they're too young. The 16-year-old accused made an application for bail last week in youth court. A judge will announce his decision next week.

The third teen accused in the matter, who is 15, has opted to remain in jail for now.