AUBURN, Ala. -- Police charged a 23-year-old Alabama man Saturday with the murder of Auburn University freshman Lauren Burk.

Also, Saturday a poignant memorial service was held for Lauren Burk at Johnson Ferry Baptist Church. Hundreds came to pay their respects. Many of them just learning of an arrest in the death of the college freshman.

Lockhart is now charged with capital murder, captial murder during a kidnapping, capital murder during a robbery and capital murder during an attempted rape.

Officials made the announcement during a Saturday morning news conference in Auburn.

Lockhart, a resident of Smiths, Alabama was taken into custody in Phenix City, Alabama after a high speed chase Friday afternoon.

Dawson said they had been trying to track down Lockhart since Friday when he was identified with a photo. He did not say how police obtained the photo.

Police told WSB-TV Channel 2 Reporter Richard Elliot that evidence found in his car links Lockhart to the murder of Burk, a graduate of Walton High School in Cobb County. The Atlanta Journal-Constitution reported Lockhart confessed to robbing an elderly woman in Columbus, Ga. on Friday.

Auburn Assistant Police Chief Thomas Dawson said Friday he wanted to lay to rest rumors that the student was sexually assaulted. He said he made the announcement for the sake of her family.

Dawson also said a gas can found in the downtown Auburn area after the killing was being tested for possible DNA evidence or fingerprints. Burk's burned-out car was found in a campus parking lot after the slaying.

Authorities say there is no indication Burk's death was related to the murder of Eve Carson in Chapel Hill, North Carolina. Investigators in both cases have discussed them with each other.

The student body president at the University of North Carolina was killed by a shot from a handgun to her right temple, according to a police report released Friday.

Authorities also said that 22-year-old Carson's keys and wallet have not been found. Police don't have any suspects in her death, and still believe it was a random act of violence.

"We've been getting a number of leads that we're trying to follow up on," Police Chief Brian Curran said at a news conference Friday.

The initial police report offers the first details about how the senior from Athens, Ga., may have died. Her body was found lying in a city street before dawn Wednesday, shot several times. Her vehicle was found Thursday about a mile away.

When police began investigating, they believed her car was stolen, the report said. Police would not say Friday if they still believe that is the case, but said the killer had access to her car.

Both communities were shocked by the violence. Students at the schools talked about how they had felt safe on campus and in the two idyllic college towns. Chapel Hill is often called "The Southern Part of Heaven" and Auburn's unofficial nickname is "The Loveliest Village on the Plains."

Both schools are respected universities. UNC ranked as the fifth best public university in the country in the most recent U.S. News and World Report's college rankings. Auburn was 45th.

Carson was last seen alive at 1:30 a.m. Wednesday, when she stayed home to do schoolwork while her roommates went out, authorities said. But they aren't clear why she was out at 5 a.m., when a report of shots fired was called in to police.

Curran said there was no sign of a break-in at her home or any evidence she was having trouble in a relationship that might have led to a conflict.

"As far as I know, she wasn't having any problems with anybody," Curran said.

Curran said police had been in contact with authorities in Alabama investigating the killing of a female student at Auburn University, but added that the cases do not appear to be connected.

Carson was a prestigious Morehead-Cain scholar and a North Carolina Fellow, taking part in a four-year leadership development program for undergraduates. A premed student, she majored in political science and biology, taught science at a Chapel Hill elementary school, studied abroad in Cuba and spent summers volunteering in Ecuador, Egypt and Ghana as part of a school program.

University Chancellor James Moeser has said there is nothing to link Carson's slaying to anyone on campus, where the news of her death has led to a widespread outpouring of grief.

"It's just a huge blow. It's a blow against everything we assume about ourselves, about being a peaceful, safe place where kids come," Moeser said Friday. "She was a joyful person. She loved this place. She loved being here."

Meanwhile Friday, Burk's family said they created a fund to help apprehend the killer. Burk was an 18-year-old freshman at the school.

Georgia Gov. Sonny Perdue said he has asked the Georgia Bureau of Investigation to offer assistance in the investigations.