Detectives have named a man found dead at a guest house as they confirmed five men have now been arrested in connection with his death.
Northumbria Police has confirmed it is leading a murder investigation into the death of Matthew Davis.
The 39-year-old was found dead in the guest house where he lived in North Parade in Whitley Bay on Friday evening.
A post mortem examination was carried out yesterday.
Five men - aged 26, 27, 43, 51 and 65, have now been arrested and are in police custody helping police with inquiries.
The men are being questioned on suspicion of murder.
Four men were initially arrested in connection with the probe.
Detective Chief Inspector Shelley Hudson, who is leading the investigation, said: "Our enquiries have led us to believe Matthew was sadly murdered and we are treating his death as a murder investigation.
"We have arrested five men who are currently in custody and helping us with our inquiries.
"We have had a good response from the public so far however I am continuing to appeal for any witnesses and would like to hear from anyone who was in North Parade in the days leading up to Friday evening, as they may have crucial information that can help with our inquiries."
Extra officers will remain in the area as police enquiries continue to offer reassurance to local residents and members of the public.
Police said they were called to the property after they received information reporting concern for a man at the address.
Officers found an injured man when they arrived at the property and said he was pronounced dead at the scene by paramedics.
Anyone with information should contact Northumbria Police on 101 quoting reference 739 170317 or Crimestoppers anonymously on 0800 555 111.