PATERSON, N.J. (AP) -- A New Jersey judge has ruled that a set of twins has different fathers.

Stork and baby
james steidl, ThinkStock

Passaic County Superior Court Judge Sohail Mohammad made the ruling Monday in a paternity case.

It's possible but rare for a woman to give birth to twins with different fathers. Mohammad wrote in his opinion that he found two other court cases nationally on such matters.

It can happen when the woman has sexual intercourse with two men in the same menstrual cycle, and two of her eggs are fertilized separately by each man.

The case came to light when a Passaic County woman sought child-support payments from a man she thought was the father of her daughters, who were born in January 2013.

A DNA test showed that man was almost certainly the father of one twin but wasn't the father of the other.

In court testimony, the mother said she had sex with both men in a span of about a week.

The judge ruled in that case that the man owes $28 per week.

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