Police are reviewing videos from a 21st birthday party that broke out into a massive fatal brawl in Gisborne two weeks ago.

Two people have been charged in connection with the 100-person fight on March 23.

Kane Wiremu Te Paa, 30, of Wainuiomata, and Chrysler Stevens-Mark, 21, died in the altercation on Lytton Rd.

The party had been a birthday celebration for Stevens-Mark.

A 25-year-old man was charged with assault, but it has since been upgraded to wounding with intent to cause grievous bodily harm. He is jointly charged with a 29-year-old man.

“Investigators are making steady progress with enquiries and have now spoken to most of those who were at the party,” a police spokesperson said this morning.

“Police have also received some footage filmed during the party and analysis is ongoing to establish its relevance to the investigation.

“A team of investigators are continuing with the investigation this week and Police will continue to have a highly visible presence in the area,” police added.

Anyone else with photos, video or information was urged to contact police by calling 105 or using the dedicated online portal.

“Prior to uninvited guests arriving, the partygoers had been having a great night and there were no problems,” Detective Inspector Dave de Lange has said. “This is a tragedy that didn’t need to happen.”