Residents on the 2500 block of Santa Barbara Loop in Round Rock were evacuated from their homes on Tuesday morning after a man found with improvised explosive devices inside his house was arrested.

The Williamson County Sheriff's Office reported that 47-year-old John Christopher Crawson was originally arrested for a third-degree felony charge of making a terroristic threat against a family member before they entered the home and found IEDs.

Neighbors in the immediate area were evacuated and were allowed to return to their homes in the afternoon.

Deputies said a long investigation had been conducted to achieve a warrant. Deputies discovered the IEDs after serving the warrant and were later joined by members of the bomb squad and the Bureau of Alcohol, Tobacco, Firearms and Explosives.

Though the Sheriff's Office did not disclose how many or what type of explosives were found, an investigation showed that Crawson had made the devices from inside the home.

Officials will remain on-site until the explosives have been safely removed from the scene and WCSO asks that the public avoid the area for the time being.