New York - Elon Musk has said he could buy more shares in Twitter, opening the door to a hostile takeover after he cancelled plans to join the social network’s board.

The Tesla billionaire said he “reserves the right” to boost his 9.2% stake in the social network at any time.

The Guardian said Musk is “unlikely to fade into the background by not joining the board”, adding that “interference is hard to avoid when one of your largest shareholders has more than 80m followers on your platform and a penchant for impulsive use of the tweet button”.