Mohammed Ali Ege has contacts in Cardiff, Pontypridd and Barry Police are offering a reward of up to £10,000 in their search for a man wanted in connection with the murder of a 17-year-old boy in Cardiff.
Mohammed Ali Ege, 32, from Riverside, Cardiff, is wanted in connection with the murder of Aamir Siddiqi.
Aamir was attacked at his family home in Roath at about 1340 BST on 11 April and died of stab injuries.
His parents Iqbal, 68, and Parveen, 55, were also seriously injured.
South Wales Police first appealed for help in finding the man last month.
But now the force has renewed its call for any new information leading to any further arrests and subsequent convictions in relation to the Aamir Siddiqi murder.
The man police want to speak to is black, 5ft 10in (1.78m), slim, with black shaved or cropped hair, brown eyes. Police say he is of Middle Eastern heritage and has a Welsh accent.
He is known to have contacts across Cardiff, Pontypridd, and Barry.
An appeal for information on finding him was aired on the BBC Crimewatch programme on Wednesday and officers said they were following up lines of inquiry as a result.
Detectives say the public should not approach him directly but call police immediately if they have any information about where he is.
People should contact the major crime incident room at Cardiff central police station on 02920 527 303 or Crimestoppers on 0800 555 111.
For immediate sightings the public are asked to dial 999.
Two men, aged 36 and 37, have been remanded in custody charged with the murder of Aamir Siddiqi and the attempted murder of his parents.
This article is from the BBC News website. © British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.