Megastar Amitabh Bachchan didn't hide his disappointment over his son Abhishek's video message on Earth Hour not being shown at the event here, wondering "Is there a pattern in all this". But the junior Bachchan brushed off the controversy, saying he is "too small a person for all this unwanted attention".

"You are perhaps aware that Abhishek has been appointed the WWF (World Wide Fund for Nature) ambassador for Earth Hour, a campaign that has been initiated by WWF for the preservation of the earth.

Many ads in the press have been announcing, with his photograph in place, that on the 27th of March let the entire country observe a simple ritual of putting off the electricity in their homes for an hour from 8.30 p.m. to 9.30 p.m, " Amitabh posted on his blog.

Abhishek's message was dropped from the Saturday function in the capital at the last minute.

"An audio-visual has been prepared with Abhishek where he is seeking a pledge towards preservation of the Earth and requesting people to switch off their lights for an hour, " Amitabh said in his blog.

"The chief minister of Delhi, Mrs Shiela Dixit, and a prominent member of the ruling Congress Party, is attending the moment. A few hours before the show was to start, apparently the audio-visual featuring Abhishek has been asked to be removed and banner posters bearing his photograph as ambassador have been stopped from being. I wonder why??"

"Abhishek, who has been working so hard on the cause is obviously disappointed, especially since he had worked late into the night where he was shooting out of town to accommodate this creative. And I wonder. Am I hallucinating, or is there a pattern in all this?"

Abhishek too commented on the incident on his microblogging website Twitter, saying, "With regards to last night's Earth Hour event at India Gate, I have nothing to say, nor any reaction. I believe that the cause is far more important than a mere mortal like me."

"The event was about Earth Hour (which I am the ambassador for) and about educating people about global warming. Thank you all for making that a possibility. I am too small a person for all this unwanted attention. Let's stick to the point!"

In his earlier post, Abhishek said he couldn't attend the function due to prior shooting commitments.

"I was to be at the India Gate function (Saturday evening) being the ambassador, and all, but prior shoot commitments would not allow me. I'm tucked away in Goa. I had sent a video message for all at the event, thanking them for their participation and support, but for some reason that couldn't be shown."

"I'm told that the Earth Hour was a huge success. Well done guys. You'll have done a wonderful job in spreading the news... I believe the function at the India Gate was also very nice and well attended. Kudos to the team at WWF for pulling all this off, " he wrote.

Amitabh Bachchan was recently embroiled in a controversy when he attended the inauguration of the Bandra-Worli Sea Link's extension, leading to protests from some Congress leaders as he is the brand ambassador for Gujarat.

Bachchan posted scanned copies of the official invite he received for the event on his blog, clarifying that he had been invited by a minister.