The BBC's technology correspondent Rory Cellan-Jones spoke to Mike Lazaridis, the co-chief executive of Research In Motion (RIM), the Canadian firm behind Blackberry.

After questioning him about RIM's new Playbook tablet, he asked a question for BBC Click about RIM's problems in India and the Middle East, where governments want to gain greater access to the tight security system used for Blackberry's business users.

Mr Lazaridis responded by saying the question was unfair, and that the interview was over. A more complete cut of the interview will be broadcast on the television edition of BBC Click later in April.

Read Rory Cellan-Jones' blog: Two tablets to take on iPad

Follow the Click team on Twitter - @bbcclick