Police released two new photos Monday evening of a young man wearing jeans and a black coat inside an area convenience store. Chapel Hill Police Chief Brian Curran said the man appears to be the same person seen in two ATM surveillance photos released Saturday.

In those pictures, the suspect is seen in a baseball cap and hooded sweat shirt driving a sport utility vehicle that may be Carson's Toyota Highlander. Curran said Monday the man in the two new photos is the only person inside the store when Carson's ATM card is used.

Earlier Monday, police said they are trying to enhance the first two photos. They clearly shows the driver of the SUV, who is wearing what appears to be a vintage Houston Astros hat, but detectives also believe a dark shape in the photos is a male passenger in the rear seat.

Police have declined to say when the surveillance photos were taken or the exact location of the ATM machine and convenience store, but Curran said Monday the same ATM card was used when all four photos were taken. He would not say if any money was successfully withdrawn from Carson's account.

"It still feels like a random crime to us,'' Curran said.

Carson, 22, of Athens, Ga., was found last week lying on a street about a mile from campus after police received two 911 calls reporting gunshots. She had been shot several times, including once in the right temple. Her SUV was found the next day a few blocks from her home.

According to a search warrant, police found Carson's cell phone near a shopping center located on the main road between Chapel Hill and Durham, about 1.5 miles from the scene of her death. Detectives have yet to locate her wallet or keys. They retrieved Carson's laptop and memory cards from her campus office, according to the warrants.

Carson's death led to a widespread outpouring of grief at North Carolina, where thousands gathered last Thursday at two memorials to remember the senior biology and political science major. At North Carolina's men's basketball game against archrival Duke on Saturday night, thousands of fans including those rooting for the Blue Devils wore Carolina blue ribbons in her honor.

Police said Monday they received roughly 200 tips this past weekend. The school's Board of Trustees, of which Carson was a member, has offered a $25,000 reward for information leading to an arrest in her death.

"We've been really truly blessed with the outpouring of support we've had from both the community here in Chapel Hill and from other law enforcement agencies,'' Curran said. "It's really been really nice to see. Everybody's really coming together trying to get this case solved.''

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