Police are working to solve a string of cell phone robberies at a number of buildings on the campus of University of Texas - Arlington.
Wednesday night, police released several surveillance photos of two additional suspects in "one or more" of the other crimes.
Police say the robberies have happened within the last two months. Most recently, on November 8 at 6 p.m., a suspect pressed an object on the victim's back outside the Hereford University Center and demanded a wallet.
On October 30, there were two different phone robberies by two different male suspects. In the first incident, a woman was waling along West Fourth Street when a man approached her from behind and grabbed her cell phone before escaping into a white, four-door sedan. In the other robbery, a different woman was walking along S. West St. when a suspect grabbed her phone from behind and got into a white, four-door sedan.
On October 22, a man pulled out a gun and demanded cell phones from two victims.
Police have made arrests in one of the string of robberies. Four men -- two adults and two juveniles -- were arrested last week in connected with a cell phone robbery on November 3. Those suspects are facing misdemeanor theft charges.
But police say more suspects are out there. UT Arlington police have increased campus patrols, particularly around parking lots. Police are asking students to call campus security for an escort if they're walking alone at night.