'Transformers' set faces second extortion attempt in Hong Kong
'Optimus Prime' attends the grand opening of 'Transformers The Ride - 3D' at Universal Orlando on June 20, 2013 in Florida
Police arrested a man who was suspected of intimidating a member of Bay's film crew on Wednesday afternoon in the Kowloon City area, where "Transformers: Age of Extinction" was being filmed.
"Four men intimidated her and asked for money" on a rooftop building location, a government statement said without referring to Michael Bay or the movie.
"Police sped to the scene and arrested a 35-year-old male," it said, adding that the other three are now being sought for "blackmail".
The three are suspected members of the Sun Yee On triad, reported the South China Morning Post.
Last Thursday, Bay was attacked by a man wielding an air conditioning unit and demanding HK$100,000 ($12,900) compensation for filming at a location in the southern Chinese city.
"Some drugged-up guys were being belligerent asses to my crew for hours," Bay said on his website then.
The fourth instalment of the Transformers franchise starring Mark Wahlberg and Nicola Peltz is scheduled to hit theatres in June.
MORE REGIONAL NEWS
Latest Photo Galleries on xinmsn
Pop megastar Justin Bieber dances and plays with young survivors of the Philippines' deadliest typhoon, bringing cheer to the disaster zone ... More Pop megastar Justin Bieber dances and plays with young survivors of the Philippines' deadliest typhoon, bringing cheer to the disaster zone amid an international relief effort. Duration: 00:21
Date 47 mins ago, Duration 0:21, Views 0