An American university student found herself caught up in a terror investigation on the other side of the world this week after Sri Lankan authorities mistakenly posted her picture with a list of potential suspects in the Easter Sunday attacks that killed more than 250 people.

The student, Amara Majeed, who attends Brown University in Rhode Island, posted on Facebook on Thursday that her photo was included in an alert issued by Sri Lanka’s Criminal Investigation Department. The public notice urged people to report any details about the potential suspects to authorities. It featured Ms. Majeed’s photo alongside the name Fathima Qadiya, who officials say is wanted in connection with the attacks.

“I have this morning been FALSELY identified by the Sri Lankan government as one of the ISIS Easter attackers in Sri Lanka,” Ms. Majeed wrote in the Facebook post. “What a thing to wake up to! This is obviously completely false and frankly, considering that Muslim communities are already greatly afflicted with issues of surveillance, I don’t need more false accusations and scrutiny.”

Ms. Majeed, a prominent United States-based Muslim activist, is the daughter of Sri Lankan immigrants. Her activism has been lauded by media organizations around the world. Ms. Majeed has been an outspoken advocate for the American Muslim community, and in 2014 wrote a book titled “The Foreigners,” to quash stereotypes about Islam.