Officers investigating the disappearance of 24-year-old Kyle Vaughan from Newbridge say they've arrested two more people.
A 27-year-old woman and a 28-year-old man, both from the Cwmfelinfach area, have been arrested on suspicion of murder.
Senior investigating officer Detective Superintendent Peter Jones said: "Eight people have been arrested during the course of the investigation.
"We are committed to finding out what happened to Kyle that night and since - and we wont stop until all avenues and lines of enquiry have been exhausted."
More top news
Barnardo's Cymru warns, on International Missing Children's Day, it's too easy for young people to agree to meet up with strangers.
A misty and mild start but there'll be more hot sunshine for all today!
A dry night with lengthy clear skies and coastal mist. It'll feel uncomfortably mild in places!