NEW YORK — New York City mayoral candidate Anthony Weiner admitted on Tuesday to sending additional explicit photos and texts to a woman he met online - correspondence she says began months after he resigned from Congress for similar behavior.

The allegation could severely test voters' willingness to forgive Weiner, who has said he spent the two years since the scandal trying to make things right with his wife and earn redemption.

Weiner, who resigned his House seat in June 2011 after acknowledging having sexual conversations with at least a half-dozen women, has been near the top of most mayoral polls since his late entry into the race this spring.

“I said that other texts and photos were likely to come out and today they have,” said Weiner in a statement released by his campaign. “I want to again say that I am very sorry to anyone who was on the receiving end of these messages and the disruption this has caused.”

Weiner did not say when the newly revealed exchanges occurred, but he said his behavior created “challenges in our marriage that extended past my resignation.”

The new lewd correspondence was posted Monday by the gossip website The Dirty. The woman involved was not identified.

The woman, who told the website she was 22 when she began her correspondence with Weiner, said their online relationship lasted for six months and continued into last summer. She claimed Weiner used the alias “Carlos Danger” for their tawdry exchanges and later asked her to destroy the evidence of their chats.