Police on the Avalon are looking to speak to "every person" who attended a house party in St. John's Friday after an assault in the home left one man seriously injured.

This was the first of two instances in which police in the city responded to an assault with a weapon.

The Royal Newfoundland Constabulary said officers responded to a disturbance at a residence on Mahogany Place in the Southlands neighbourhood of St. John's around 10:30 p.m. 

A 21-year-old man was taken to hospital with serious injuries and remains in hospital. No arrests have been made. 

Anyone with information is asked to contact the RNC or Crime Stoppers.