Watch Hacker Suspected After Every Emergency Siren in Dallas Rings Out in Prank in New Channel | Channify

More from Inside Edition: https://www.youtube.com/user/cbstvdinsideedition?sub_confirmation=1 The search is underway for a hacker who caused panic in Dallas after 156 emergency sirens were heard going off over the weekend. It began at 11:42 p.m. Friday as the sirens, which warn about approaching tornadoes, went off. However, there was no inclement weather or tornadoes headed to the area. Some even feared it might be a terrorist attack coming on the heels of the U.S. missile launch against Syria. The sirens were shut off and then turned back on more than a dozen times during the night.