Hackers to blame for sounding tornado sirens in Dallas, officials say

Hackers were responsible for tornado sirens sounding across Dallas Friday night, officials said.

Dallas officials said Saturday they believe the hack came from someone in the area, Fox 4 News reported.

The sirens started to blare at around 11:40 p.m. Friday night. Rocky Vaz, an Office of Emergency Management official, said the hack caused 156 sirens to go off across Dallas. It led to a surge in 911 calls.

Emergency crews were forced to manually turn off the sirens early Saturday. All sirens were shut off by 1:15 a.m., officials said.

Authorities have not released any information as to who is possibly behind the hack.