Christchurch police have executed several warrants today, in relation to the ongoing investigation into an alleged murder in Mairehau

Tyrone Munns died at a social housing complex on Mairehau's Innes Road on March 9.

Police arrested and charged a 29-year-old man with murder last week.

Senior Sergeant Damon Wells says officers are speaking with a number of people and have completed search warrants in Northcote and Pegasus.

He's assuring the community, there's no risk to the public.