Mumbai: Google's India subsidiary is being sued for alleged defamation in the Bombay High Court by an Indian construction equipment company, The Wall Street Journal said.

Mumbai-based Gremach Infrastructure Equipments & Projects is demanding that Google disclose the name of a person who criticised it using Google's blogging service, the paper said.

A blogger using the name "Toxic Writer" criticised the company on, a site that allows individuals to create blogs without publicly revealing their identities, the paper said.

The Journal said the Bombay High Court ordered the blog taken down on February 26.

"At the present stage, there is merit in the contention... that the article put up by the defendant on the blog site is defamatory," the paper quoted the court as saying.

The court ordered Google India to reveal the identity of the blogger within four weeks of the order, the paper said, adding that Google is yet to reveal the blogger's name.

If Google loses the case it may have to disclose the blogger's identity, a move that could set a precedent for court challenges to the anonymity of its users, the Journal said.