Sketches of three people released by ATF . The FBI said the sketches were taken from a laptop and cellphone seized during an investigation into the shooting at Marjory Stoneman Douglas High School in Parkland, Fla. Patrols , by both police and residents , have been stepped up near east Texas churches .
Sketches of three people released by ATF . No clear theme linking fires , which have struck churches of different denominations . Patrols , by both police and residents , have been stepped up near east Texas churches .