WELLINGTON, June 7 (Xinhua) -- A street in the eastern suburbs of Christchurch was blocked off by the police after a gunshot was heard and reported.

Police arrived in the area early Friday morning after receiving a report saying a firearm was discharged on the street by a park in the suburb of Avonside, Senior Sergeant Paul Robertson said in a statement.

There were no reported injuries, Robertson said, adding investigations are underway.

Police strengthened security nationwide after a gunman stormed two Christchurch mosques and killed at least 51 people in New Zealand's deadliest terrorist attacks on March 15.