"Cordons are currently in place on Hei Hei Road while Police work to establish the circumstances of the incident," a police spokeswoman said.
St Bernadette's School was in lockdown this afternoon, and said everyone was "safe and sound" but students were being picked up by parents.
A Christchurch Transport Operations Centre spokesperson said due to the police incident, Hei Hei Rd was fully closed to traffic between Wycola Ave and Tirangi St this afternoon.
The road was opened just after 3pm.
HEI HEI RD - ROAD CLOSED - 1:20 PM FRI, 6 NOV Due to a police incident, Hei Hei Rd has been fully CLOSED to traffic between Wycola Ave and Tirangi St. Road users can detour northeast bound by using Wycola Ave to Manurere St to Aurora St and the reverse for southwest travel. ^SM pic.twitter.com/kR0jwPJxyE