Five students , including Christopher Gibson , 18 , are in police custody for allegedly conspiring to kill another student on campus . Five students at a high school in Tucson are in police custody for allegedly conspiring to kill another student on campus . The five , who attend Flowing Wells High School , were arrested on Wednesday night and booked into jail on suspicion of conspiracy to commit first-degree murder . Four of the suspects are minors but police say they could all be charged as adults . They have named as Gabriel Quiroga , 15 ; Jessica Good , 17 ; Andrew Totten , 15 ; Anastasia Lakin , 17 ; and Christopher Gibson , 18 . Officers went to the school on Wednesday after another student told Flowing Wells ' administrative staff about the alleged plan . Tucson Police Department 's Special Investigation Division carried out interviews and learned that the five students were involved in a weeklong plan to kill another student . 'Detectives determined that not only was there a plan but the five students accused would meet in the mornings and at lunch to discuss the details of the plan , ' police spokesman Sgt . Pete Dugan told KHBS . 'Each meeting got further involved in the planning process , and the last meeting was when they decided to bring the weapon . Scroll down for video . The five , who include Jessica Good , 17 , and Gabriel Quiroga , 15 , were arrested on Wednesday night and booked into jail on suspicion of conspiracy to commit first-degree murder . 'They had even decided where the murder would take place , somewhere off campus . These meetings went on for about a week . ' School staff found the knife in the student 's possession . Police have n't release details of the motive for the plot , saying only that the group was having problems with the student who was their alleged target . 'It was not a random act , ' Dugan said . 'They were targeting someone who hung out in the same group as them . Someone they were having problems with and decided to kill . 'We were able to stop it before it happened , and it was to the point where we thought it would happen , ' says Dugan . Four of the suspects , including Andrew Totten , 15 , and Anastasia Lakin , 17 , are minors but police say they could all be charged as adults . Tucson Police Department 's Special Investigation Division carried out interviews at Flowing Wells High School and learned that the five students were involved in a weeklong plan to kill another student .
The five , who attend Flowing Wells High School , were arrested on Wednesday on suspicion of conspiracy to commit first-degree murder . They have been named as Gabriel Quiroga , 15 ; Jessica Good , 17 ; Andrew Totten , 15 ; Anastasia Lakin , 17 ; and Christopher Gibson , 18 . Police said the group planned to kill a classmate at school before killing themselves after being confronted by police.