‘End everything’: Therapist drowned her 3-month-old daughter in bathtub, wanted to kill whole family, cops say

Chevy Chase Maryland drowning

Police in Chevy Chase, Maryland, arrested a mother after she allegedly drowned her 3-month-old daughter (WRC/YouTube).

A Maryland mother and licensed clinical counselor is in jail after she allegedly drowned her 3-month-old daughter in a bathtub at their home.

The Montgomery County Police Department said in a press release that its communications center received a 911 call shortly after noon Sunday from the defendant, 37-year-old Mackenzie R. Colgan, saying she drowned the girl at their house in the 7300 block of Summit Avenue in Chevy Chase, just outside of Washington, D.C. First responders rushed to the home and tried to save the girl. But doctors at a hospital pronounced the girl dead.

More from Law&Crime: Mom arrested in toddler son’s drowning death allegedly fell asleep while he was in the bathtub

According to a probable cause arrest affidavit obtained by Law&Crime, Colgan took the baby from family members around 11:40 a.m. Sunday and said she was going to take the girl upstairs and bathe her. About 20 minutes later, Colgan came downstairs and told the girl’s father and her husband that the victim was dead, the affidavit said. The father ran upstairs and tried to give the baby CPR and told Colgan to call 911.

Officers took Colgan to the police station for an interview. Post Miranda, Colgan allegedly told detectives that she woke up the morning in question with a plan to “end everything.” She was going to kill her two kids and her husband, she allegedly told cops. Colgan said she filled a baby bath with water and placed it into a larger tub.

“She then said that she turned the baby to face away from her and held the victim’s head under the water until she knew the victim was dead,” cops wrote. The girl’s name was redacted from the affidavit.

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