Police have arrested two more suspects - a 55-year-old man and 37-year-old woman - in connection with last month's attack on former Ming Pao editor Kevin Lau.

Mainland police earlier arrested two men in Dongguan believed to be the assailants responsible for the February 26 chopper attack on Mr Lau. Seven other men suspected of being involved in the assault were arrested in Hong Kong yesterday, bringing the total number of suspects to 11.