Federal authorities say they've taken a Tampa man into custody after finding eight pipe bombs and bomb-making materials in his home.

The Bureau of Alcohol, Tobacco, Firearms and Explosives reports in a news release that ATF agents, along with FBI bomb technicians and Tampa police, executed a search warrant Monday at the home of 24-year-old Michael Ramos. Tampa police had passed along a tip about the explosives to ATF.

The news release says Ramos had previously expressed anti-government sentiment and acknowledged being in possession of explosives. Besides the bombs, agents reported finding an AK-47 semi-automatic rifle, a .45 caliber pistol and large amounts of ammunition.

The ATF didn't immediately report any charges against Ramos. It wasn't known whether he had an attorney.