Police in New Zealand say there are "multiple fatalities" after shootings at two mosques in Christchurch.
Three men and a woman have been arrested.
Officers say a number of explosive devices have been made safe too.
All of the city's mosques have been told to close while schools are also on lockdown.
New Zealand's prime minister Jacinda Ardern said it's one of the country's darkest days.
The person who has committed this violent act has no place here. To those in Christchurch; I encourage you to stay inside and follow the instructions of @nzpolice. The Police Commissioner will be making a public statement at 5pm. I will update everyone again later this evening.
— Jacinda Ardern (@jacindaardern) March 15, 2019