The contention of the AR was that Shri M.Sankar is not a concerned person representing the assessee to receive such notice and the notice was served on improper person. We also find from the assessment order that Shri Sanjib Sarkar being one of the partners appeared on 10-12- 2010 before the AO for first time and the order sheet at page no-1 of paper book supports the same. We further find that the AO recorded the issuance of notice u/s. 142(1) on 19-7-2010 for fixing the hearing on 02-08-2010 and thereafter, according to assessment order, probably, after 26-08-2010 another notice for initiation of penalty proceedings u/s. 271(1)(b)of the Act was issued. Therefore, it goes to show that a person claiming to be representing the assessee as partner appeared before the AO for the first time on 10-12-2010 in response to notice issued u/s. 271(1)(b) of the Act and it concluded that the service of notice u/sec 143(2) on 30-09-09 and issuance of notice thereafter u/sec 142(1) of the Act was not in the knowledge of the assessee and as rightly contended by the AR notice u/sec 143(2) of the Act was not properly served on the assessee