At the movie set of "Noah" in the woods of Oyster Bay Long Island, British actress Emma Watson had the scare of her life when she suddenly came across a creepy stalker while working on her upcoming film. The young actress of the "Harry Potter" franchise reportedly recognized the stalker as the man who has been lurking near her house.

Inquisitor.com reports Emma Watson let out a scream of fear after recognizing the stalker that boldly approached her after sneaking in the movie set.

"The man managed to slip on to the set with some visitors and then approached her. She recognized him from hanging around outside her house and screamed," a source told The Sun. "He took off into the woods and was chased by security and a couple of the tough stunt guys who also happen to be martial arts fighters. They caught up with him in the woods. Police were called and he was removed by security. It was really creepy. Emma was really shaken up and was given some time to compose herself," the source further shared.

However, the unidentified stalker was not apprehended by the police and was later on let go after giving a word of warning about his trespassing violation. The 22-year-old actress may have been unscathed from the incident yet it does not give her any safety assurance that the scary stalker encounter will not happen again.

Emma Watson, who portrays the character Ila, stars alongside Russell Crowe and Anthony Hopkins in the upcoming biblical epic film by director Darren Aronofsky. "Noah" is scheduled to be released in theaters in 2014.

Emma Watson

Emma Watson at the 2012 MTV Movie Awards

Emma Watson: From Harry Potter’s Geek to Hollywood’s ‘It’ Girl

Emma Watson and Daniel Radcliffe

The little Hermione of the “Harry Potter” film series stole the show as an upcoming fashionista this year. The British actress, Emma Watson outshone everyone at the photo call of final Potter film, "Harry Potter And The Deathly Hallows - Part II" in London in July, before she donned a student avatar to resume her studies at Oxford University later in the year.

Emma Watson

British actress Emma Watson introduces a clip from "Harry Potter and the Deathly Hallows Part 2" at the 2011 MTV Movie Awards in Los Angeles, June 5, 2011. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT) (MTV-SHOW)

British actress Emma Watson poses for photographers as she arrives for the Elle Style Awards in London February 14, 2011.