Erlyndon Joseph "Joey" Lo, 27, of Plano, filed documents there Friday saying his religious beliefs entitled him to use deadly force to prevent an abortion. He listed the name of a clinic, its address and the time he was going to show up — noon that day.

"I plan on saving at least one human life in Dallas, Texas," Lo wrote.

FBI spokesman Mark White said he was unsure if Lo went at that time, but said agents worked with Dallas police "to make sure there wasn't going to be an issue at the clinic." Lo was arrested Saturday.