The New York Police Department says it's assessing a threat posted on a website related to the Islamic State group against the organizer of a cartoon contest about the Prophet Muhammad.

Blogger Pamela Geller organized the contest over the weekend in Texas, where two men started shooting before they were killed by police.

NYPD spokesman Stephen Davis says the threat names Geller. He says investigators from counterterrorism and intelligence bureaus met with her on Wednesday and will do a "comprehensive threat assessment" to decide whether it's credible enough to require security for her.

He hasn't commented on the specific nature of the threat or what any security measures would look like.