Two more Georgia State University students have been robbed at gunpoint in Library North, the scene of multiple armed robberies in the last month.
Both robberies occurred before 8 a.m., according to a university alert sent Thursday morning.
Two GSU students said they were robbed of their laptops, the university said in the alert.
The suspect, GSU said, was wearing black Adidas shorts, a black top and a grey beanie.
This was at least the fourth robbery the university has reported since December all happening at Library North at the intersection of Decatur and Courtland streets.
Deputy Chief Carlton Mullis said the university is looking into why robberies keep happening in the library.
Armed robberies are very rare at Georgia State and certainly inside the buildings, he said.
One factor at play may be the isolated study areas of the library, which may allow robbers to remain hidden, Mullis said.
We are increasing our police and security patrols of campus and specifically in and around the libraries, he added.
Library robberies started on campus Dec. 15, when a student was robbed at gunpoint of his cellphone and laptop at about 1:30 p.m.
The next day, GSU police arrested 38-year-old Daniel Duplessy, who remains in custody at the Fulton County Jail.
His arrest didnt halt campus robberies.
The next robbery was reported Jan. 12, when a student told police a black man described as 5-foot-11 with a low haircut and tattoos on his neck stole his book bag, which contained a MacBook.
Georgia State police, in turn, enhanced library patrols with specialized units on Jan. 12, police said.
But despite the change, the man allegedly returned to Library North Jan. 14 and stole a students MacBook and cellphone, Mullis told The Atlanta Journal-Constitution.
A week after that armed robbery, police released a sketch of a man wanted for questioning in that incident and two others.
Mullis said no one is in custody in connection with the most recent robberies, but he thinks they are all related.