A high school nurse has admitted carrying out sex acts on three students in a minivan - including when it was parked outside McDonald's.

Maryland State Police said Samantha Marsh, 33, of Crisfield, is charged with having sexual contact with four teenage students. She has admitted to only three and all were all 17 at the time.

Local news station WJZ reports she worked as a school nurse at Crisfield High School and Academy.

According to court documents, all four students stated that Marsh performed sexual acts with them in the back of her van at other locations in Crisfield - including the car park of a local McDonalds and her own driveway.

The police in Maryland are still piecing together the case, but claim she has already admitted almost everything.

She is charged with 10 counts of fourth-degree sex offenses, four counts of perverted practice, four counts of contributing to the condition of a child and one count of an attempted fourth-degree sex offense.

She had been picked up by officers on Tuesday and taken to the Maryland State Police Princess Anne Barrack and is being held without bail at the Somerset County Detention Center.

She was placed on administrative leave from work prior to her arrest, police said.

An investigation into Marsh was initiated Monday by the Maryland State Police Criminal Enforcement Division, Lower Shore Region.

Police said that according to a preliminary investigation, the alleged offenses occurred between March 2018 and January 2019.

Investigators said the victims are all believed to be students at Crisfield High School & Academy, although none of the alleged activity took place on school grounds.

WJZ reports she has already waived her Miranda rights to make her confession.

Her unnamed husband told them off camera: “She’s got kids, she’s got a little boy.

“I know she did wrong. I know that. She is not a bad person.”

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Two of her alleged victims initially denied everything when quizzed by cops, but one later changed their mind, and the other only changed their mind at the insistence of his mother.

Maryland State Police officer Ron Snyder said: “They are entrusted with students, and this appears to be a case where that trust was allegedly broken.”