Police were called to the Hereford St emergency night shelter just after 10pm to reports of a man having been stabbed, Detective Senior Sergeant Craig Johnson said.
The victim, 22, died not long after.
The 67-year-old made a brief appearance at Christchurch District Court this morning, charged with murder.
His case will be recalled at 2.15pm on Monday to give him time to speak with a lawyer.
Christchurch City Missioner Corinne Haines said it was a tragic event.
“As a result of the stabbing last night at our men’s emergency night shelter and continuing police investigations, our campus area at 276 Hereford Street has been closed,” Haines said.
The City Mission will close its men’s day programme, learning and development hub, reception and admin areas today while there will be no onsite alcohol and other drug counselling and social worker work.
“It is tragic that this event would happen on our premises,” Haines said.
“We will offer full support to all our staff and clients who have been affected. We will keep you updated as we have more discussions with the police.”
The organisation’s foodbank will today be across the road at 275 Hereford St but will only be open for clients who have pre-booked a food parcel with their self-serve foodbank or pre-packed parcel service.