Miran Thakrar was found guilty at St Albans Crown Court
One of two brothers accused of the gun killings of three drug dealers has been found guilty.
Miran Thakrar, 24, of no fixed address, was convicted of three counts of murder by a jury at St Albans Crown Court.
Keith Cowell, 52, his son Matthew, 17, and Tony Dulieu, 33, from Essex, were killed at the Cowells' Bishop's Stortford house on 28 August 2007.
The jury has yet to return a verdict on Kevan Thakrar, 21, of Lomond Way, Stevenage, who denies murder.
Kevan Thakrar also denies three counts of murder and two attempted murders.
The court has been adjourned and the jury will continue to consider its verdict on Thursday.
Miran Thakrar also denied the attempted murders of two women in the house at Plaw Hatch Close - charges on which the jury has not yet reached verdicts.
Four other defendants deny charges of assisting an offender.