Cops: Father beat baby boy on Christmas
Nantucket man faces charges
By Edward Mason
Wednesday, December 30, 2009 - Updated 1h ago

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A Nantucket brute with a history of violence gave his 3-month-old baby boy a Christmas Day beating that sent the child to the hospital, police said.

Gerson Francisco Lopez Delgado, a 22-year-old landscaper from El Salvador, was drunk when he grabbed the boy by the head and shook him violently until the child vomited, according to Nantucket police.

The baby is being treated at Children’s Hospital in Boston for undisclosed injuries. His condition was not released by authorities.

A spokeswoman for the Department of Children and Families, Jennifer Kritz, said the boy’s mother has custody of the child. Authorities refused to identify the mother.

The nightmare began on Christmas Eve, police said, when Delgado threatened his girlfriend - the boy’s mother - with a knife.

Delgado was arrested on Christmas Day, after the girlfriend called police, and was arraigned Monday in Nantucket District Court on charges of aggravated assault and battery on the baby, and assault with a dangerous weapon for the attack on his girlfriend.

Delgado is someone “known to us,â€