The remains of Rachel Castillo, who went missing Thursday, were found by detectives in Antelope Valley on Sunday, according to the Simi Valley Police Department. Detectives located Castillo’s body in a remote part of Antelope Valley. Rachel Castillo was 25 years old and a single mother. So far, SVPD detectives have identified Castillo’s ex-husband Zarbab Ali as the prime suspect. The 25-year-old Hawthorne resident was arrested at his parents’ home in Victorville. Castillo and Ali had two children together. The suspect would pick up the young children, who are aged five and two, every Thursday morning, according to her family. Castillo was first reported missing Thursday night after her sister, Emily, arrived at their Simi Valley home and called 911. After authorities arrived, they quickly found that there had been a struggle and all of Rachel Castillo’s belongings were still in the apartment. Her church family met Sunday night to pray for her safe return, unaware that she had already been found dead. “We miss you, we love you, just know that we want to come home and you are so loved and if you can hear this message know that we surround you with love,” Sergio Lopez told CBSLA reporter Lori Perez. CBSLA staff The CBS LA staff is a team of experienced journalists who bring you the content on CBSLA.com.