The 2-year-old son of a Yemeni mother who was granted a visa to visit him in the U.S. died Friday, the Council on American-Islamic Relations confirmed.

Abdullah Hassan was on life support after seeking treatment for his genetic brain condition at UCSF Benioff Children's Hospital in Oakland, Calif.

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"We are heartbroken. We had to say goodbye to our baby, the light of our lives," said his father, Ali Hassan.

"We want to thank everyone for your love and support at this difficult time. We ask you to kindly keep Abdullah and our family in your thoughts and prayers."

Hassan and his son are U.S. citizens, but the child's mother, Shaima Swileh, is not. Ali Hassan flew with their son to the U.S. in October to seek treatment for his condition.

Swileh's story gained national prominence after her family said she was barred from seeing her dying son due to the Trump administration’s travel ban.

Hassan made a public plea to President Trump to expedite Swileh's visa application so she could see her son one last time. The State Department granted her visa request earlier this month, allowing her to travel from Egypt to California to see her dying son.

Hassan had told the San Francisco Chronicle earlier this month that his family planned to move both his son and wife to the U.S., but it became more urgent for him to relocate their son as his condition began to worsen.

"Ali and Shaima are in our thoughts and prayers as they mourn the loss of dear Abdullah," said Saad Sweilem, a civil rights attorney with CAIR.

"With their courage, this family has inspired our nation to confront the realities of Donald Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE’s Muslim Ban. In his short life, Abdullah has been a guiding light for all of us in the fight against xenophobia and family separation."

Funeral services will be held Saturday in Lodi, Calif., according to CAIR.