Australia will fine social media companies up to 10 percent of their annual global turnover and imprison executives for up to three years if violent content is not removed “expeditiously”.

The new law, passed by the country’s parliament on Thursday, is in response to the attack by a self-confessed white supremacist on two mosques in Christchurch in New Zealand on March 15, killing 50 people as they attended Friday prayers.

The gunman broadcast his attack live on Facebook and it was widely shared for over an hour before being removed, a timeframe Australian Prime Minister Scott Morrison described as unacceptable.