MILWAUKEE -- A Milwaukee firefighter was accused of drugging his wife's tea, and police arrested him after the couple's 3-year-old drank the allegedly tainted drink, WISN in Milwaukee reported.

Police arrested the firefighter at his home Saturday night.

Forty-three-year-old Michael Dunn was accused of lacing his wife's Earl Grey tea with a prescription antidepressant.

According to sources, the couple had been arguing and Dunn drugged his wife's drink.

She is a Milwaukee police officer and discovered the medicine when she saw white powder around the 3-year-old's mouth. A little earlier, she had given the child some of her tea.

Prosecutors believe the child was an unintended victim.

Dunn is an 18-year veteran of the Milwaukee Fire Department. His firehouse offered little information and only said they were told to carry him on sick leave.

This is not Dunn's first domestic abuse arrest. Court records reveal a 2004 arrest involving his former wife. Dunn threw a bag of laundry at his 5-year-old daughter and then threw his wife to the ground, police said. As part of a so-called deferred prosecution agreement, the district attorney dropped the charge after Dunn stayed out of trouble for seven months.

The Milwaukee County District Attorney's Office said it expected to decide on charges in the case by Tuesday morning. Dunn remained in the Milwaukee County Jail where he was booked on the felony charge of placing foreign objects in edibles.

The prosecutor said both the wife and child were unharmed. Placing foreign objects in edibles carries a maximum 18-month prison sentence.