A man has significant burn injuries from a fire at the Mustard Seed Wellness Centre in the downtown core.

Calgary firefighters were called to 1010 Centre Street south on Saturday around 10:30 p.m.

Fire crews said the blaze was contained to one suite due to a working fire suppression system.

EMS said the man remains in hospital with significant burn injuries that are “potentially life-threatening.” No one else was injured.

The fire department is investigating a cause.