Local media told AFP that at least nine people were dead and the South Island city was placed in lockdown as police hunted for an "active shooter".
The Bangladesh cricket team were outside the Christchurch mosque, where shots were fired on Friday.
Performance analyst Shrinivas Chandrasekeran, also on Twitter, posted: 'Just escaped active shooters.
Bangladesh opening batsman Tamim Iqbal said it would be hard for the national cricket team to overcome the shock of narrowly escaping the shooting.
A user while comparing the Pakistan attack with New Zealand attack wrote "Yes but you should know that there were no casualties during the attack on Sri Lanka Cricket team 10 years back but doors of cricket were shut down till now".
JOHN KIRK-ANDERSON STUFFArmed police escort survivors to the hospital after the Christchurch mosque shooting
The shootings resulted in the cancellation of the third cricket Test between New Zealand and Bangladesh, whose team were on a bus approaching one of the mosques, and the Super Rugby clash between the Otago Highlanders and Canterbury Crusaders in Dunedin.
The test match was canceled, and the Bangladesh squad was preparing to fly home on Saturday.
Mohammad Isam, a journalist traveling with the Bangladesh team, said he believed the players wish to leave New Zealand as soon as possible. He listed his white nationalist heroes, described what he said motivated him to attack, and said he purposely used guns to stir discord in the United States around the Second Amendment. Heartbeats pumping badly and panic everywhere! Frightening experience and please keep us in your prayers, ' Tamim said in his twitter account. "I think everything changes now", he said. However, the team canceled the match and the tour immediately. "Our thoughts and honest condolences go out to the families and friends of those affected by this horrendous incident in Christchurch", Richardson said. "We are working to have any footage removed", the New Zealand police tweeted.
New Zealand prime minister Jacinda Ardern condemned the incident and said, "This is one of New Zealand's darkest days".
Underlining that this was not the first time he had visited New Zealand and as far as he had observed there was nothing unusual in the day to have been suspicious about such an incident taking place, Isam said that it was very unexpected in a country "like New Zealand".
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