The Pima County Attorney’s Office will not press charges against the five Flowing Wells students arrested on charges of conspiracy to commit first degree murder, according to a press release.

According to the release, the office conducted a comprehensive review of the investigation and determined there was insufficient evidence to file formal charges against the students, who were arrested on March 18.

The Pima County Attorney's Office determined that the evidence collected during the investigation was insufficient to establish that there was an actual, concrete agreement between the students that a murder would take place. The office said that the students discussed ways that a fellow student might be killed. There was, however, no agreement on how they intended to carry out the killing, and no details (who would carry out the killing, when it would happen or where it was to take place) had been discussed. The release says there was no evidence a consensus was reached about actually carrying out a plan to commit the murder.

The students admitted to having conversations about a murder, but that the discussions had “no serious intention to act” and the conversations were hypothetical in nature.

One of the Flowing Wells students was in possession of a knife when he was arrested, but claimed that he regularly carried the knife to school. The country attorney’s office is evaluating whether charges may be filed against that student for bringing the weapon to school.