Updated at 4:15 p.m.: Revised to include information from the medical examiner's office and police.

A Grand Prairie woman who went missing in February along with her estranged boyfriend was found dead last week in Mountain Creek Lake, police confirmed Monday.

Weltzin Garcia Mireles (Grand Prairie Police Department)

A kayaker called police Wednesday to report a body in the water. Grand Prairie police said the body was that of 26-year-old Weltzin Garcia Mireles.

Mireles and her boyfriend, Alfonso Roderick Hernandez, 28, went missing Feb. 5. Mireles had recently obtained a protective order against Hernandez, and he was wanted on a domestic-violence warrant, accused of punching Mireles.

Hernandez was found dead in White Rock Lake in February.

The Dallas County medical examiner's office said determinations on the cause and manner of death of Garcia and Hernandez were pending.

Atziry Mireles, Weltzin's twin, said her sister had moved into their cousin's house with the couple's children, a 3-year-old and 6-year-old, after several disputes with Hernandez.

Alfonso Hernandez (Grand Prairie Police Department)

Atziry Mireles said Hernandez texted a goodbye message and apology to his family the morning he disappeared with Weltzin.

The woman's family and police searched for signs of the couple for days at White Rock Lake, where Hernandez's car was found.

Weltzin's mother, Vania Mireles, posted on Facebook Monday thanking people for their prayers for her daughter. She is "in a better world," Vania Mireles wrote in Spanish.

The couple's two children were briefly removed from relatives' care by Child Protective Services but were returned to family members about a week later.

The Dallas Police Department's Homicide Unit will lead the investigation into Weltzin Mireles' death.

Grand Prairie police spokesman Mark Beseda said the department plans to share information to assist Dallas police in their investigation.

"Once they complete their investigation, we will close ours as well," Beseda said in an email.

He said Grand Prairie police are not looking for any other people involved in the case. Police did not have information about a manner of death for either Mireles or Hernandez.