Husband of mom accused in sons' deaths admits to sex charge

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The husband of a woman accused of killing their three sons has pleaded guilty to a misdemeanor charge for having sex with his wife before they were married when she was underage.

Forty-four-year-old Joseph Pilkington pleaded guilty Monday to sexual imposition and must register as a convicted sex offender annually for the next 15 years.

The Ohio man originally was charged with sexual battery for beginning a sexual relationship with Brittany Pilkington and impregnating her in 2009, when she was 17.

The now-24-year-old Brittany Pilkington could face a death sentence if convicted of killing their sons, two infants and a toddler. She's accused of suffocating them out of jealously over the attention her husband gave them. She has pleaded not guilty.

Joseph Pilkington isn't a suspect in the children's deaths.