respondent nos 1 and 2, hereinafter referred to as 'plaintiffs' instituted suit on 15.3.2010 against respondent no.3, hereinafter referred to as 'defendant no.1, and respondent no.4 'hereinafter referred to as 'defendant no.3', alleging that respondent no.3defendant no.1 was the tenant of the suit premises. He had sublet the suit premises in favour of the petitioner, hereinafter referred to as 'defendant no.2', who, in turn, had parted with possession of the suit premises by subletting it to respondent no.4. He invited my attention to the bailiff's reported dated 23.3.2010 which indicates that summons was served on Mangesh Nandu Rekame, brother of defendant no.3. Thus, on 23.3.2010 defendant no.3 was served. The bailiff report further indicated that defendant nos 1 and 2 were not found at the suit address, date and time and on making inquiry with brother of defendant no.3 he was informed that defendant nos 1 and 2 are not residing at the suit address and their present whereabouts are not known to him. He further invited my attention to the bailiff's report dated 25.3.2010 wherein on inquiries from inmate person Shri Namdeo Govind Nakate was informed that defendant nos 1 and 2 are not staying at the suit address and their whereabouts are not known and therefore the bailiff returned. 4. Mr. Thorat submitted that on 8.4.2010 the plaintiffs made application for effecting service on defendant nos 1 and 2 through RPAD/UPC, by pasting on the premises and Court house