U.S. authorities raided the home of a Hamilton, Ohio, man who appeared to have links to the hacker group LulzSec, as a probe into recent high-profile computer attacks gained momentum.

Agents from the Federal Bureau of Investigation searched the home Monday, an FBI spokesman confirmed without providing any further detail. A person close to the matter said the arrested man is an alleged LulzSec member.

The groups have claimed responsibility for a number of attacks against companies and government organizations. That has prompted a global law-enforcement crackdown on the groups that has included waves of arrests across Europe and in Turkey.

British police, who are cooperating with the FBI, have made seven arrests this year as part of their probe. That includes 19-year old Ryan Cleary who had been a prominent figure in Anonymous and then LulzSec. U.K. prosecutors last week charged him with five computer-related offenses. Authorities allege he infected computers in order to form a computer network, called a botnet, that he then used to launch online attacks against websites including that of the Serious Organised Crime Agency, a U.K. equivalent of the FBI.