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It has been reported that FBI agents are also already on the scene and are questioning local residents.

In a statement, Austin police chief Brian Manley, addressing local residents, said: “Not only do not touch any packages or anything that looks like a package, do not even go near it at this time because given the darkness we have not an opportunity to really look at this blast site to determine what has happened.”

“It is obvious there has been an explosion. It is obvious it has caused significant injuries to two people and it is important right now for anyone in the neighbourhood behind us to remain inside and give us time to work through this.”

There are reports that the explosion was triggered by a possible tripwire attached to it.

The Austin Police Department (APD) earlier tweeted: "APD responding to Bomb Hotshot call in the 4800 block of Dawn Song Dr.

“Please avoid the area.”

In addition, Austin Police have sent out an emergency alert to all phones in the area telling residents to remain inside their homes.





