HOUSTON (AP) — The mother of a toddler who died weeks after her release from the nation’s largest family detention center has filed a legal claim seeking $60 million from the U.S. government for the child’s death.

Attorneys for Yazmin Juarez submitted the claim against multiple agencies Tuesday. Juarez’s 1-year-old daughter, Mariee, died in May.

Juarez’s lawyers say Mariee developed a respiratory illness while she and her mother were detained at the South Texas Family Residential Center in Dilley. They accuse U.S. Immigration and Customs Enforcement of releasing the pair while Mariee was still sick.

The girl died six weeks later in Philadelphia.

Washington-based law firm Arnold & Porter says it will file a lawsuit if the government doesn’t settle its claim.

A spokesman for U.S. Customs and Border Protection says the agency wouldn’t comment on pending litigation. Other agencies didn’t immediately respond to messages.