Detectives hunting the killers of Belfast schoolboy Thomas Devlin carried out new searches in a loyalist housing estate today.
Officers returned to Mount Vernon, where much of their inquiry has centred since the 15-year-old was stabbed to death in August 2005.
They trawled through a property in the Ross House complex, a police spokeswoman confirmed.
Thomas was attacked on the Somerton Road, close to his north Belfast home, as he returned from a garage.
He was stabbed up to five times in the back.
During an earlier search at Ross House police brought in a specially trained sniffer dog.
That was prompted by the discovery of a knife nearby. The weapon has since undergone forensic tests.
Despite making 12 arrests so far, police have yet to charge anyone with Thomas's murder.