I probably should clarify my earlier post.
The statute of limitations for filing charges on crimes in Pennsylvania depends on the crime. For major crimes (most felonies), a prosecutor will have 5 years from the time the crime was committed to file charges. For other crimes (including some lesser felonies), the prosecutor must file charges within two years from the time the crime was committed. There are a few exceptions that do not seem to apply here.
IF a 3rd degree felony theft charge is pursued by the prosecutor, the prosecutor has two years to charge the one who committed the crime (or who is assumed to have committed the crime). IF the prosecutor believes a major felony burglary charge can be supported, he would have 5 years to charge the one or ones believed to have committed the crime.
If your friends have been holding their breath hoping no charges are filed against them, looking at the two year statute of limitations as a time they can breath easy again, they might need to hold their breath for another 3 years.