The death toll of a shooting in an elementary school in the small town of Uvalde, Texas, has risen to 18 children and three adults, a state senator told CNN. “I was just briefed by the Texas Rangers, 18 children have passed on, and three adults,” Texas State Senator Roland Gutierrez told CNN. Gutierrez added that the suspect’s grandmother was in critical condition. CNN earlier had reported multiple law enforcement sources as saying that the suspect had shot his grandmother before heading to the school. The toll makes the Robb Elementary School shooting the deadliest since 20 Sandy Hook element…