Federal authorities have arrested Daniel Park, 32, of Washington state, for allegedly aiding the bomber of a California fertility clinic by supplying chemicals and helping test explosives.

Park and the bomber, Guy Edward Bartkus, who died in the May 17 blast, shared anti-procreation beliefs and connected through fringe online forums.

The bombing, labeled a terrorist act, caused major damage but no casualties.

Park, who fled to Poland after the attack, was extradited and arrested at JFK Airport, the Associated Press has reported.

He faces charges of providing material support to terrorists and will be transferred to California for further proceedings.

Written by B.C. Begley