WASHINGTON (AP) — Claudette Colvin, whose 1955 arrest for refusing to give up her seat on a segregated Montgomery bus helped spark the modern civil rights movement, has died. She was 86.

Her death was announced Tuesday by the Claudette Colvin Legacy Foundation. Ashley D. Roseboro of the organization confirmed she died in Texas.

Colvin was arrested months before Rosa Parks gained international fame for her own act of defiance on a segregated bus.

On March 2, 1955, a bus driver called police to report that two Black girls were sitting near two white girls, which violated segregation laws. One of the Black girls complied with the request to move toward the back of the bus; however, Colvin courageously stood her ground and was subsequently arrested at the age of 15.

Colvin’s bravery paved the way for her to become a named plaintiff in the landmark lawsuit that ultimately outlawed racial segregation on Montgomery’s buses. Her legacy continues to resonate as a powerful testament to the struggle for civil rights and social justice.