The death of a 30-year-old man in Paisley is being treated as murder.
The man was discovered by police attending a disturbance in Argyle Street at about 15:35 on Saturday.
Another man, aged 37, was also found with serious injuries and is in a "serious but stable" condition in hospital.
Police have appealed for witnesses and pointed out that the street is residential and a number of people would have been in the area.
Det Insp Grant MacLeod, who is leading the investigation, said: "The area in which this took place is very residential, therefore I would like to speak to anyone who lives nearby who may have witnessed the disturbance to come forward.
"A man has lost his life following a violent assault and it is a priority that we identify who is responsible.
"The time of the attack was during the afternoon on a weekend, therefore there would have been more people than usual in the area."
He added: "This is understandably a real shock to the communities of Paisley, however I would like to reassure local residents that a team of detectives are working tirelessly on this investigation.
"There are additional officers in the area and I would ask anyone who has any concerns or information to approach those officers. Again, I would like to reiterate my appeal for information, please come forward if you have any information which might be able to assist us."
Officers are carrying out door-to-door inquiries in the area and checking CCTV.