WHEATON, Ill. (CBS) -A jury in DuPage County has convicted a Willow Springs man accused of master-minding the murders of three members of a Darien family in 2010.

The jurors deliberated not quite two-and-a-half hours before reaching their verdict in the Johnny Borizov case; guilty on all counts, three counts of murder — one each for the slain members of the Kramer family — and one count of conspiracy to commit murder.

Bailiffs and attorneys warned those entering the courtroom not to show emotion when the verdict was read, but a gasp went up from the crowd when the jury announced the first guilty verdict. People squirmed in their seats, stomped their feet and hugged, until the bailiff again warned those in the packed courtroom to restrain themselves.

Many in the crowd applauded as Borizov was led away. As they spilled out of the courtroom, people cried, hugged and offered thanks.

Borizov’s trial on murder charges is the first trial to allow cameras in the courtroom in the Chicago area.

The judge set post-trial motions for June 27, at which time a sentencing date will be set.