A Florida mother appeared to smile as deputies escorted her on a manhunt Wednesday night after her 14-year-old daughter was found dead inside their home, authorities said.

Kelsie Glover, 33, was arrested earlier in the day on suspicion of aggravated assault with a deadly weapon and battery after responding deputies found her chasing witnesses with a hammer in her Poinciana home. Osceola County Sheriff Marcos Lopez said.

Witnesses told deputies they saw Glover hold her 14-year-old daughter’s head under water in a bathtub until she became unresponsive. They said Glover began chasing them and attacking them with a hammer when they tried to stop her from harming her daughter.

Deputies at the home tried to save the unresponsive teenager, later identified as Giselle Glover, but she was pronounced dead at a hospital.

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Kelsie Glover appeared to smile at reporters during a killer walk in Osceola County, Florida, Wednesday night. (FOX35 Orlando WOFL)

Lopez said additional charges against Glover are pending a medical examiner’s determination of the teenager’s cause of death.

“It’s a dark day when things like this happen,” Lopez told reporters during a news conference. “What happened to her was unimaginable and we are determined to get justice for Giselle.”

Kelsie Glover was initially arrested on suspicion of aggravated assault with a deadly weapon and battery, though additional charges are pending, the sheriff said. (FOX35 Orlando WOFL)

Lopez said four people were inside the home at the time of the incident: Glover, her daughter, another child and a roommate.

Giselle Glover’s father was not home at the time, Lopez said, adding that the father has since been told of his daughter’s death.

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The circumstances leading to the teenager’s death remain under investigation. Lopez said Glover was “a little uncooperative.”

Deputies arrived at the home to find Kelsie Glover armed with a hammer and chasing witnesses who accused her of drowning her daughter, the sheriff said. (FOX35 Orlando WOFL)

The sheriff said that although there was no precedent domestic violence history or calls involving the girl and her mother, there was a previous incident in which Glover was accused of beating her husband, who is the teenager’s father.

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Lopez added that Glover has no prior record mental illness that the authorities knew about.