A judge of the Superior Court dismissed an indictment charging the defendant with unarmed robbery. We transferred the Commonwealth’s appeal to this court and now affirm the judge’s order.
A police officer who interviewed the victim after an unarmed robbery in August, 1987, wrote down the victim’s description of her assailant. That description, which has been lost or destroyed, was potentially exculpatory evidence. There is no indication that the government lost or destroyed the evi
*310
dence in bad faith. In such a situation, the law of the Commonwealth provides that, on a motion to dismiss charges because of the government’s loss of potentially exculpatory evidence, the judge must consider and balance the degree of culpability of the government, the materiality of the evidence, and the potential prejudice to the defendant in order to protect the defendant’s constitutional due process right to a fair trial. See
Commonwealth
v.
Olszewski,
The defendant was charged with the crime more than two years after it occurred. While the victim was serving on a six-person jury in a case in which the defendant was on trial, she recognized the defendant as the man who had robbed her.
Weighing the appropriate factors, the judge determined that the interests of justice would be best served by dismissing the indictment. The judge concluded that the degree of police fault in losing the written description of the defendant was not great, considering the passage of time, but that some mechanism should be in place to preserve information of this type. It was, of course, impossible to determine whether the lost notes would have been material and exculpatory, but there was the reasonable possibility, the judge rightly said, that the notes, if saved, could have been used to impeach the identifying witness. He ruled that, because of the length of time that had passed and the suggestive circumstances under which the victim identified the defendant, *311 the absence of the notes created a strong possibility of prejudice. 1
The Commonwealth argues that the judge applied the wrong standard in assessing the consequences of the loss of the police notes. It claims that
Arizona
v.
Youngblood,
The rule under the due process provisions of the Massachusetts Constitution is stricter than that stated in the
Youngblood
opinion. See
Commonwealth
v.
Phoenix,
*312 We adhere to the due process of law principles that we have previously expressed for determining the consequences of the government’s loss of potentially exculpatory evidence. In this case, the judge applied the proper test and did not abuse his discretion in dismissing the indictment.
Order dismissing indictment affirmed.
Notes
The victim and the police made a composite sketch of the assailant that has not been lost, but it was not presented to the judge. The existence of the composite sketch does not make the defendant’s proof inadequate or the judge’s conclusion inappropriate.
