According to the police, 16-17 members of a family from Sayyad Nagar in Pune's Hadapsar area had hired a private bus to visit the scenic spot near Lonavala for a picnic on the rain-soaked day.
The appeal filed through advocate Nishant R Katneshwarkar raised 20 grounds while assailing the high court order.
The Bombay high court on Thursday quashed the death penalty awarded to lone convict Himayat Baig in the 2010 German Bakery blast in Pune due to lack of evidence, but confirmed the life sentence imposed on him for possession of explosives.