A lockdown was lifted Monday afternoon at all Alamo Heights Independent School District schools, including Cambridge Elementary.
The lockdown had been in place after someone phoned in a threat to Cambridge on Monday morning. But according to an email that was sent to parents from Dr. Kevin Brown, Alamo Heights ISD superintendent, police determined that the phone threat "was not credible."
During the lockdown, SWAT team members were seen on the roof of the school and bomb sniffing canines were also on the scene.
A police presence will be maintained at all Alamo ISD campuses for the remainder of the week, Brown said.
Students were released to their parents around 2 p.m. while the rest left at the normal dismissal time.
Parents who picked up their children were clearly on edge.
"Surreal, especially with the Connecticut thing," said Craig Marrow, who picked up his nephew early. "It was very difficult to just sit by and not do anything knowing police were taking care of everything, but very difficult."
"A lot went my through my head especially with the holidays and hearing all the stories going on," said Fernando Tamayo, a parent. "It's a scary feeling to think you're going to lose your child."