A Houston mother who calmly told an acquaintance that she had killed her two children and hid their bodies underneath a neighbour's home drowned them in a bathtub by forcibly holding their heads underwater, authorities said today.
Sheborah Thomas, 30, was charged yesterday with capital murder of a person under age 6, according to court records.
She remained in custody.
According to a probable cause affidavit read during a court hearing before a magistrate judge today, Thomas told police that after she picked up her 7-year-old son and 5-year-old daughter from daycare late last week, she fed them and then prepared a bath for them.
Thomas first called her daughter into the bathroom.
"She grabbed (the daughter) by the head and forced her underneath the water until she stopped moving," according to the affidavit. "After she wasn't moving and she wasn't breathing, she took the body out of the water and placed her in the bedroom."
Thomas then called her son into the bathroom and she placed him in the water, authorities said. The boy struggled against his mother, grabbing her hand, but Thomas "continued to force his head underneath the water until he stopped struggling, he stopped moving," according to the affidavit.
Thomas placed his body next to his sister's in the bedroom and then later put their bodies in a rubbish bin behind her home, the affidavit said.
Thomas was not in court for the reading of the affidavit. Online criminal court records do not list a lawyer to comment on behalf of Thomas, whose next court appearance is set for Thursday.
Police say investigators are still trying to determine a motive, but it is believed that Thomas acted alone. Autopsies have been ordered.
She was so matter-of-fact about it, he didn't think she was serious. He thought she was joking
On Monday, Thomas tried to first bury the bodies next to her house but was not able to dig a deep enough hole, authorities said. She then rolled the bodies underneath a neighbour's house, according to the affidavit.
Thomas then began packing up her belongings and enlisted an acquaintance who saw her dumping things in a field to help her move. When the man asked about her kids, she calmly said she had killed them, said Houston police spokesman Kese Smith.
"She was so matter-of-fact about it, he didn't think she was serious. He thought she was joking," Smith said. "He continued to help her pack."
Smith said the man eventually realised something was wrong when he asked again and got the same answer, so he drove the woman to a police precinct.
Investigators don't yet know whether the mother has a history of mental problems, Smith said. He said police had been to the home before but for "nothing major".
State child welfare officials had visited the family, Texas Department of Family and Protective Services spokeswoman Tejal Patel said, adding she could not disclose the nature of those visits. Patel said a "top to bottom review" of the family will be conducted.
Houston police say Thomas also has a 12-year-old son, but he was with his father. According to court records, Thomas has several convictions, including for theft and failure to identify oneself to an officer.
In 2001, Houston mother Andrea Yates drowned her five children ranging in age from 7 years to 6 months in the bathtub of her family's home. She was eventually found not guilty by reason of insanity in July 2006 and sent to a state mental hospital.