The Flanders man who authorities said beat his pregnant girlfriend so severely that doctors delivered her baby girl early pleaded not guilty Thursday during his arraignment on an indictment charging assault, according to the Suffolk district attorney's office.

Mohammed Proctor, 38, was ordered held by Acting State Supreme Court Justice Mark Cohen on $150,000 cash or $300,000 bond after being arraigned on a seven-count indictment on two counts of second-degree assault, two counts of third-degree assault, one count of criminal obstruction of breathing, and two counts of endangering the welfare of a child. He had been arraigned on his initial arrest charges earlier this month.

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Proctor, Southampton Town police and the district attorney's office said, punched his 32-year-old girlfriend in the stomach and head and tried to strangle her during an Aug. 3 confrontation in his Flanders home. She was 71/2 months pregnant.

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The woman suffered two broken ribs and other injuries; her daughter was delivered by Caesarean section and remains hospitalized at Stony Brook University Hospital.

Proctor's attorney could not be reached for comment.

Suffolk County District Attorney Thomas Spota's office said in a news release the court also issued orders of protection for the girlfriend and the couple's 19-month-old son, who authorities said witnessed the beating.