A 40-year-old mother arrested this week on suspicion of involuntary manslaughter after her 2-year-old son drowned during a bath at a home in Placentia was released from custody Friday.

Officers were called to the home in the area of Main Street and Santa Fe Avenue about 9 p.m. Monday, and paramedics rushed Aidan Beisel to a hospital, where he was pronounced dead, according to the Placentia Police Department.

Investigators determined Aidan’s mother, later identified as Melissa Lynn Beisel, was giving the child a bath when she stepped away, then returned to find the toddler face down in the water, police said.

“Her statement to investigators was that she stepped away for a short period to grab something,” added Placentia Police Department Lt. Joe Connell.

The mother was also taken to a h

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