Deputies in Navarro County, assisted by agents from the Bureau of Alcohol, Tobacco, Firearms and Explosives, are investigating after seizing 45 firearms and 100,000 rounds of ammunition from a Navarro County home Thursday.

Deputies went to arrest Harvey Alec Strain, 79, on a warrant charging possession of child [pornography, but once inside the house found the cache of weapons and ammunition, Navarro County Sheriff Elmer Tanner said.

Deputies arrested Strain as he was pulling up to his front gate of the three-story home, and during the arrest deputies found a loaded handgun in his possession, Tanner said.

Because there were so many firearms and because deputies believed some of them might be illegal, they summoned help from ATFE’s Dallas field office.

"We do believe he was in possession of firearms that were illegal for him to possess," Tanner said.

Investigators discovered several automatic weapons and components to build firearms hidden in the home, some secreted inside walls, Tanner said.

ATFE agents were back at the residence Friday continuing their search for weapons and other evidence, Tanner said.

Strain remained Friday in custody in the Navarro County Jail awaiting formal arraignment and bond, Tanner said.

Strain had a loaded semi-automatic handgun at the time of his arrest on Thursday afternoon.

Strain could face additional charges if the ATF finds that the firearms were illegal to possess.