Mumbai, Aug 30 (PTI): Megastar Amitabh Bachchan is an angry man at the moment.

Enraged by an unknown blogger, who has been posting derogatory messages on Bachchan's blog and sending him abusive texts on his mobile phone, the superstar has warned, "I can be a gentleman up to a point."

The 67-year-old actor, who lodged a complaint against the person, is angry that the blogger is targeting his grand children in his messages.

"There is a limit to which this can be tolerated. I can be a gentleman up to a point. But beyond that I shall stop being one. You go to the level of so much as touching my family and little innocent grand children and you shall have to pay extremely dearly," Bachchan wrote on his blog.

The superstar said he has been getting a "barrage of messages of support" since the matter was picked up by the media.

"The media picked up our blog of yesterday and spread it out into the world of information and now for the entire day there has been a barrage of messages of support, of wanting to catch the culprits and take them to task, of grave indignation and of being incensed by this show of absolute garbage that has been directed towards me," he wrote.