A Roosevelt couple was arrested after their 8-year-old son was found to have been beaten with an extension cord, police said.

The parents, a 30-year-old man and a 32-year-old woman, who were arrested at 4 p.m. Monday, were charged with assault and endangering the welfare of a child after a teacher found open wounds on their son, police said.

To protect the child’s privacy, Newsday is withholding the names of the parents.

The child had been “disciplined” at home by his parents, who used “an extension cord of some kind” to whip him for “misbehaving,” Nassau County police said in a news release.

The child’s teacher discovered “open lacerations, both old and new” on his back and arms.

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The child was taken to a hospital for treatment and then released to a family member, police said.

The parents were each charged with one count of assault with intent to cause physical injury with a weapon and one count of acting in a manor injurious to a child, according to online court records.

Both had a temporary order of protection issued against them and were conditionally released to probation, records show. They are due back in court on March 9.

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Attorney information for the couple was not immediately available.

With Mark Morales