( CNN ) -- Police have arrested a man in the killing of Auburn University freshman Lauren Burk , who died this week , according to the Auburn , Alabama , assistant police chief . Courtney Larrell Lockhart , 23 , of Smiths , Alabama , is charged with capital murder during a kidnapping , capital murder during a robbery , and capital murder during an attempted rape , Tommy Dawson said Saturday . The Phenix City Police Department took Lockhart into custody on Friday , police said . Phenix City is about 35 miles southeast of Auburn . Burk , 18 , from Marietta , Georgia , was found shot on North College Street , a few miles north of campus , on Tuesday night . She died later at a hospital . Minutes after police responded to the call reporting an injured person and found Burk , they found a car -- which turned out to be Burk 's -- on fire in a campus parking lot . Dawson told reporters Friday that authorities think gasoline or another accelerant was used to ignite Burk 's car , and police were investigating whether a gas can found in downtown Auburn was connected . Police want to investigate every possible lead , Dawson said . Authorities were still on patrol in the east Alabama campus , he said . The university 's Web site said a campus-wide memorial service will be held Monday . The site carried a message from Burk 's father , James , which said : `` The Burk family was so proud to have Lauren as an Auburn University student . We want to extend our deepest gratitude and appreciation for Auburn University , the city of Auburn and the Auburn Police Department . We feel very close to your community . We appreciate what everyone is doing for us and Lauren . '' Also on Friday , police released pictures of a 2001 Honda Civic similar to Burk 's car . Authorities asked anyone who thinks they might have seen the car on Tuesday to contact them . Police are continuing to interview people , Dawson said . A student at the University of North Carolina in Chapel Hill -- Eve Carson , 22 , of Athens , Georgia -- was also shot to death this week , on early Wednesday . Authorities in Chapel Hill said Friday they had been in contact with Auburn police but did not believe the two cases were connected . Watch CNN 's Nancy Grace discuss the two killings of college women from Georgia » . Burk 's family , in a statement read Friday to reporters by family friend Kathy Singleton , expressed their gratitude for the thoughts and prayers offered , but asked for privacy `` so that they may grieve for their loss as well as celebrate Lauren 's life . '' Those wishing to honor Burk could do so by donating to her favorite charities , Singleton said -- The Invisible Child and the American Kidney Foundation . Donations can be made at any Wachovia Bank to the Lauren Burk Memorial Fund . E-mail to a friend .
Courtney Larrell Lockhart , 23 , charged with three counts of capital murder . Auburn University student Lauren Burk found shot Tuesday , died at hospital . Burk 's car found minutes later engulfed in flames in campus parking lot .