A convicted sex offender wanted in Texas on new sexual assault charges was apprehended late last month at a home in Pottawatomie County.

Eric Masters Castillo, 38, was convicted of sexually assaulting a 15-year-old girl and, as a result, was required to register as a sex offender in Bandera County, Texas, beginning in August 2000. Now, he has new charges out of Medina County, Texas: four counts of aggravated sexual assault of a child, one count of failing to register as a sex offender and one count of aggravated assault with a deadly weapon.

Investigators say Castillo cut off his ankle monitor and fled Texas in order to avoid prosecution.

Last month, U.S. Marshals notified Pottawatomie County Sheriff Mike Booth that Castillo was believed to be living in Shawnee. Together, deputies and marshals determined that Castillo was at a home in Shawnee with his girlfriend and her two children.

When investigators showed up at the home on September 26, Castillo told deputies his name was "Tyler Durden."

Investigators say they found several concerning items, including a loaded pistol on his person, multiple firearms in the home, a gas mask, a bulletproof vest, a helmet, and a Time magazine featuring "notorious serial killers."

Despite the arsenal of weapons, Castillo was arrested without incident. He was booked into the Pottawatomie County jail on complaints of unlawful flight to avoid prosecution and carrying a firearm in commission of a felony.

As for his charges in Texas, Castillo faces up to four life sentences if convicted.