Pursuant to the defendant’s motion under Pa.R.Crim.P. 1100(f) the lower court dismissed the complaint with prejudice. The Commonwealth appeals. We remand.
*130 On March 8, 1977 the defendant was arrested for driving while intoxicated. On the same day a complaint was filed, he waived a preliminary hearing and was released on bond. On April 6, 1977 the Commonwealth sent to the defendant a notice of his trial date by certified mail return receipt requested. This notice was returned to the Commonwealth marked “unclaimed” on April 22, 1977. 1 On the scheduled trial date, June 15, 1977, the defendant did not appear and at the Commonwealth’s request a bench warrant was issued. On August 17, 1978 the defendant was stopped for motor vehicle violations; he was then arrested on the bench warrant and subsequently was released. In September he filed a motion for continuance to the December term of court 2 and in November he filed a motion to dismiss under Pa.R. Crim.P. 1100(f) and a hearing was held. The court granted the motion to dismiss the complaint with prejudice and the Commonwealth filed the instant appeal.
The Commonwealth is required to try a defendant within 180 days of the filing of the complaint. Pa.R.Crim.P. 1100. Any delay beyond the 180-day period “. . . must be either excluded from the computation [of the period, Pa.R. Crim.P. 1100(d)] or justified by an order granting an extension pursuant to the terms of the rule [Pa.R.Crim.P. 1100(c)] if the Commonwealth is to prevail.”
Commonwealth v. Shelton,
Under 1100(d) the Commonwealth may exclude any period of delay which results from the unavailability of the defendant. Pa.R.Crim.P. 1100(d). The Commonwealth may exclude such period if while the defendant is on bail the Commonwealth properly notifies him of his trial date and he fails to appear,
Commonwealth v. Cohen,
In
Cohen,
the Supreme Court held that “a defendant on bail who fails to appear at a court proceeding,
of which he has been properly notified,
is unavailable [under Pa.R. Crim.P. 1100(d)] from the time of that proceeding until he is subsequently apprehended or until he voluntarily surrenders himself.”
Cohen, supra,
We first consider whether certified mail is a sufficient form of notice under
Cohen.
It is true, as the Commonwealth argues, that Pa.R.Crim.P. 309 permits service to be effected by, inter alia, sending that which must be served by
*132
certified mail. Pa.R.Crim.P. 309(b)(4). However, Pa.R. Crim.P. 309 does not by its terms apply to notice to the defendant to appear for trial. In fact, it has recently been stated that the Pennsylvania Rules of Criminal Procedure are “silent concerning both the requirement and form of notice to defendants to appear for trial.”
Commonwealth v. Bundridge, supra,
Bundridge
is the only case we have discovered which discusses forms of notice which are sufficient under
Cohen.
3
Relying on
Mullane v. Central Hanover Trust Co.,
Although notice by certified mail addressed to the defendant may be a sufficient
form
of notice under
Cohen,
it remains for us to determine whether under the facts of this case the defendant was in fact “properly notified.” Although
Cohen
speaks of “receipt of reasonable notice,” “willful failure to appear,” and “where the defendant is on bail and has notice,”
Cohen, supra,
Here, the judge made findings of fact or there was uncontradicted evidence that, although notice was sent by certified mail and it was correctly addressed, the defendant never received it, he never received the postal notice that stated there was an unsuccessful attempt to deliver the notice and that it was waiting for him at the post office, and he never refused the delivery of the notice. Moreover, the Commonwealth knew he had not received the notice since it was returned to the Commonwealth. Thus, although the Commonwealth employed a reasonable form of notice, since it knew the defendant did not receive the notice and the defendant was not at fault for not receiving the notice, Cohen does not allow the Commonwealth an exclusion of time merely because it sent the notice.
Nevertheless, the Commonwealth may still prevail if it establishes that the defendant could not be located despite its exercise of due diligence.
Commonwealth v. Smith, supra; Commonwealth v. Bundridge, supra; Commonwealth
v.
Clark, supra.
The lower court did not consider whether or not the Commonwealth exercised due diligence. It merely decided that the defendant was not properly notified under
Cohen.
Under
Cohen
a due diligence analysis is misplaced if the defendant is on bail and has notice.
Cohen, supra,
Since the lower court failed to consider the issue of due diligence, we remand for an evidentiary hearing to determine whether the Commonwealth can establish its due diligence in locating the defendant and to determine the amount of time excludable under Pa.R.Crim.P. 1100. In a similar situation we have remanded to the lower court.
Commonwealth v. Clark, supra.
In
Clark,
the lower court failed to consider whether the Commonwealth had established due diligence in locating the defendant and the period of time excludable because of the Commonwealth’s due diligence. We remanded for an evidentiary hearing on those issues.
Clark, supra,
Remanded.
Notes
. The time from the filing of the complaint until the time the defendant would have been tried if the case had not been dismissed is so much in excess of the 180-day period that it is unnecessary for us to decide whether the time from the sending of the notice to the time it. was returned unclaimed is excludable under Pa.R.Crim.P. 1100(d).
. If the time for the continuance was excluded as provided by Pa.R.Crim.P. 1100(d)(2), the Commonwealth would still not have tried defendant within the 180-day period.
. This discussion appears in Judge Hoffman’s dissenting opinion. Judge Hoffman dissented since he found the record was inadequate to determine whether proper notice had been given to the defendant. The majority did not discuss the forms of notice which are permissible and thus did not disagree with the dissent on this point.
