Seven people are being arrested in the North about the murder of schoolboy Thomas Devlin.
The 15-year-old was stabbed to death just over two years ago as he walked to his north Belfast home.
Thomas Devlin died after he was stabbed five times in the back as he walked towards his home on Belfast's Somerton Avenue in August 2005.
The schoolboy and his two friends had been to the local filling station to buy sweets and were on the way home when they were attacked.
PSNI officers arrested three men and woman early this morning in North Belfast in connection with the murder.
Another man and two women were already being questioned after being arrested yesterday.
It brings to 15 the number of people detained in relation to this murder, although as yet no one has been charged.