US authorities have reportedly arrested a man who is accused of stalking and harassing Malia Obama.

The Secret Service are said to have detained Jair Nilton Cardoso, a 30-year-old Brooklyn man, after he allegedly stalked the 18-year-old daughter of former president Barack Obama at multiple locations, including attempting to enter the White House in the past.

According to the New York Daily News, on one occasion Mr Cardoso turned up to the fourth floor of the Tribeca office where Ms Obama was working as an intern and asked the eldest Obama child to marry him.

Sources told the paper that the Secret Service also stopped Mr Cardoso when he tried to follow the former first daughter out of a building in the West Village where she was doing another internship. The agents reportedly recognised the man and ordered him to leave the eldest Obama child alone.

Agents are then said to have gone to Mr Cardoso's Brooklyn apartment and interviewed him, concluding that he had psychiatric issues and taking him to a Brooklyn hospital to be evaluated.

Michelle Obama as the First Lady Show all 11 1 /11 Michelle Obama as the First Lady Michelle Obama as the First Lady NEW YORK - MARCH 9: Michelle Obama, wife of Presidential candidate Senator Barack Obama (D-IL) addresses the crowd at a fundraising event at the Grand Hyatt March 9, 2007 in New York City. The mass fundraiser of Senator Barack Obama targeted a youthful demographic. (Photo by Michael Nagle/Getty Images) Getty Michelle Obama as the First Lady WASHINGTON - JANUARY 4: U.S. Senator Barack Obama (D-IL) (2nd L) poses for with his wife Michelle (2nd R), Vice President Dick Cheney (R), daughters (C) Malia and Sasha during the reenactment of a swearing -in ceremony on Capitol Hill January 4, 2005 in Washington, DC. The 109th Congress was sworn in January 4. 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Sources told the paper the Secret Service agents reported Mr Cardoso to the police on Tuesday.

Ms Obama recently gained global attention for joining a protest against the Dakota Access pipeline held at the Sundance Film Festival. She was reported to have left her family’s Caribbean holiday to attend the largest independent film festival in the US back in January.