The Bangladeshi Test cricket team was among the worshippers in the mosque, and had to flee
New Zealand media reported that ambulances had been rushing from the scene to hospital
"[The events] involve an active shooter, they involve multiple fatalities," New Zealand police commissioner Mike Bush said.
Shrinivas Chandrasekaran, an analyst with the Bangladeshi cricket team currently touring in Christchurch, said the entire Test team had been at the mosque at the time of the attack.
Frightening experience and please keep us in your prayers," Mr Chandrasekaran wrote.