The White House said Tuesday that a string of deadly bombings in Texas has “no apparent nexus to terrorism” and vowed to bring the bomber to justice.

“@POTUS mourns for victims of the recent bombings in Austin,” White House press secretary Sarah Huckabee Sanders tweeted. “We are monitoring the situation, federal authorities are coordinating w/ local officials. We are committed to bringing perpetrators of these heinous acts to justice. There is no apparent nexus to terrorism at this time.”

.@POTUS mourns for victims of the recent bombings in Austin. We are monitoring the situation, federal authorities are coordinating w/ local officials. We are committed to bringing perpetrators of these heinous acts to justice. There is no apparent nexus to terrorism at this time. — Sarah Sanders (@PressSec) March 20, 2018

The serial bombings have gained national attention and sparked fear in the Lone Star State.

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The latest explosion occurred early Tuesday when a package bomb went off inside a FedEx distribution center near San Antonio, injuring one worker.

Police said the bombing was related to four others in the Austin area that have killed two people and injured four others over the course of three weeks.

Authorities have not yet identified a suspect, but the bomber appears to be sophisticated. The fourth explosion was set off with a trip wire.

Other officials have described the bombings as terrorism.

"This is absolutely a terrorist activity," Texas Rep. Brian Babin (R) said on Fox Business Network.

"We have no clue who this is, absolutely no clue," he added. "I’m sure the FBI and the law enforcement agencies that are looking into this have some tips, some clues, but I haven’t heard anything about it.”