A Roman Catholic nun was released from the custody of US Immigration and Customs Enforcement (ICE) after the agency arrested her while she walked to mass in her habit in south Texas. Sister Leticia Ugboaja was walking to Our Lady of Sorrows church in McAllen, Texas, just a few miles from the US-Mexico border on Sunday when she was detained by ICE officers, the church said in a statement on social media. The US Department of Homeland Security (DHS) and ICE have not responded to a request for comment since Sunday. The nun is part of the Daughters of Mary Mother of Mercy and volunteered as what is known as an extraordinary minister of holy communion at Our Lady of Sorrows, according to Brenda Riojas, a spokesperson for the Catholic Diocese of Brownsville, Texas. Ugboaja is also a registered nurse at South Texas Health System, Riojas confirmedg. She also worked previously for 10 years as a certified nursing assistant at DHR Health in Edinburg, Texas.