'I want to watch the world burn': Reddit user claims to be Texas bomber

A man has taken to social media site Reddit claiming to be responsible for recent bombings in Texas.

The user, going by the name “austinbomber”, said he’s a man between 30 to 50 years old. He’s also promised not to stop detonating explosives and wants to be as "prolific" as the Zodiac killer - a notorious serial killer behind a string of murders in the 1960's.

"My intention is not to kill people. I am doing this simply because I want to watch the world burn," he wrote.

He added his attacks aren’t “race-related” and he doesn’t have a terminal illness “or anything like that”.

“Now mental illness. Who knows,” he wrote.

Many Reddit users were sceptical.

“Have any proof? Didn’t think so. Stop pretending to be the bomber. It’s not only weird, it’s pathetic,” one user wrote.

A spokesperson for the Austin Police Department told the New York Daily News authorities are aware of the Reddit thread and will investigate.

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The man’s Reddit profile has since been suspended.

Austin residents have been nervously changing daily habits since a series of mysterious bomb attacks hit the Texas city in recent weeks.

Since March 12, when two parcel bombs exploded within hours of each other, Austin police have sent out frequent reminders in Spanish and English on social media to avoid suspicious packages and call authorities if they see one.

The latest parcel bomb, containing nails and shrapnel, that was destined for an address in Austin, Texas, exploded at a FedEx Corp distribution centre in San Antonio, injuring one employee, on early on Tuesday local time, San Antonio fire officials say.

That blast came two days after the latest of four powerful homemade bombs set off in Austin this month, which killed two people and injured six more in what police warned appeared to be the work of a serial bomber.

The package exploded shortly after midnight local time at a distribution facility in Schertz, Texas, outside of San Antonio, about 105km south of Austin, the San Antonio Fire Department said on Twitter.