ANTI-TRIAD detectives will continue to provide protection for publisher Jimmy Lai Chee-ying whose home and offices were attacked after his Next Magazine carried stories about the Tiger of Wan Chai. The detectives are investigating two cases of criminal damage and one fire-bombing against Mr Lai's home and offices which occurred after articles in Next Magazine hinted Chan was the Tiger of Wan Chai. A week after the publication of the article, Next Magazine's Quarry Bay office was smashed up by three men armed with metal bars. Almost at the same time, Mr Lai's associated company office was also damaged by three men armed with a wooden pole, a hammer and a water pipe. The following day, Mr Lai's home at Piper's Hill overlooking Shekkipmei was fire-bombed. No one was injured as the Molotov cocktail landed about 12 metres from his house. Detectives have been keeping watch at his home and at the offices since the incidents, hoping to catch the people responsible if they strike again. ''We don't know how long the cover will continue but we expect our investigation to be lengthy,'' a police source said. Officers are studying the articles in the magazine in the last six months to find out which might have angered some people.