( CNN ) -- All charges have been dropped against the first suspect arrested in connection with last week 's shooting at a Texas community college that left three wounded , officials said Monday . Carlton Berry , 22 , was arrested on the day of the shooting and charged with two counts of aggravated assault with a deadly weapon , but the Harris County district attorney dismissed the charges pending `` further investigation , '' Harris County District Clerk Claire Kennedy said . The Harris County sheriff has scheduled a news conference for Monday afternoon to talk about why the charges against Berry were dropped . Investigators arrested another man -- 22-year-old Trey Foster -- on Friday , charging him with two counts of aggravated assault with a deadly weapon , Kennedy said . Foster was arrested in Plano , more than 250 miles north of the scene of the shooting at the North Harris campus of Lone Star College , just outside Houston . The shooting garnered wide attention amid early fears that a gunman was on the loose on a campus . Harris County officials have said the January 22 shooting apparently stemmed from an argument between two men . At least one had a student ID . Both were wounded by gunfire and treated at a hospital . A maintenance worker also was shot in the leg . The shooting took place outdoors between the academic building and the library . Foster is being held in jail awaiting arraignment , set for February 28 , Kennedy said . CNN 's Marlena Baldacci contributed to this report .
Carlton Berry , 22 , was arrested and charged the day of the shooting . Michael Foster , 22 , was arrested Friday and remains in jail . The shooting happened last week at the West Harris campus of Lone Star College . It apparently stemmed from an argument between Foster and Berry , police said .