( CNN ) -- The fourth and final suspect in the fatal shooting of two Arkansas university students turned himself in Monday , University of Central Arkansas police said . The first suspect was apprehended while driving about three minutes after the Sunday night shooting . The others were detained later , said Lt. Preston Grumbles . The suspects were identified as Kawin Brockton , 19 ; Kelsey Perry , 19 ; Mario Toney , 20 and Brandon Wade , 20 . Police released little details on the suspects other than the fact that they were not university students . `` It does not seem at this time that it was a random act , '' he said , but police are `` unsure of the precise motive . '' He said there was `` no indication '' the shooting was gang-related . University police released the names of the victims Monday . Ryan Henderson , 18 , of Little Rock , Arkansas , and Chavares Block , 19 , of Dermott , Arkansas , were killed . Block was a sophomore pre-engineering major . Henderson was a freshman who had not yet declared a major . The university 's student government will hold a candlelight vigil in memory of the students at 5 p.m. ( 6 p.m . ET ) Monday . Religious organizations on campus will host a prayer vigil Tuesday . A third victim , Martrevis Norman , was treated at a hospital and released . He is not a student at the university , said Lt. Rhonda Swindle of UCA campus police . A hospital representative earlier told CNN that the survivor was shot in the leg . `` This is something you pray never happens , '' interim university president Tom Courtway said , visibly upset . `` But it happened . '' The shooting , which happened outside a dorm , prompted a campus lockdown and the cancellation of Monday classes . Courtway said classes will resume Tuesday . Watch police describe the shooting » . The shots were fired near Arkansas Hall and the Snow Fine Arts Center at 9:22 p.m. , Swindle said . Freshman Sam Hausen , who was about 50 feet ( 15 meters ) away from the shooters when the gunfire began , said , `` I heard about five or 10 shots and , at first , I thought it was just firecrackers , because everybody always clowns around out there , but I just realized that it was n't firecrackers . '' As he began running away , he saw one of the wounded students hit the ground and another stumble into the dorm , he said . `` I saw a couple cars speed off , '' Hausen said . `` I do n't know if they were the shooters or not . '' Student Lauren Knight , who was walking to the library when the shooting started , said students scurried for safety . When the campus lockdown was ordered , Knight was stuck with other students for several hours inside the library , she said . The university serves about 12,500 full-time students in Conway .
NEW : A fourth and final suspect has turned himself in , police say . Student government , religious groups plan prayer vigils for students . Two students killed , one wounded Sunday night , officials say . Shooting prompted lockdown at University of Central Arkansas in Conway .