England cricketers have been warned not to hurl the ball close to batsmen after pacer Stuart Broad was fined 50 per cent of his match fees during the third day's play in the second Test against Pakistan at Edgbaston on Sunday for hurling the ball at Pakistan wicketkeeper Zulqarnain Haider.

The England and Wales Cricket Board has emailed all 18 counties and the umpires in an attempt to curb the practice.