Punj Lloyd, they said.
Service Tax has been a "focus area" for the Finance Ministry to increase its revenue from indirect taxes.
The DGCEI officials are taking strict action against all evaders after a first-of-its-kind amnesty scheme for Service Tax defaulters ended in December last year.
The Voluntary Compliance Encouragement Scheme (VCES), which was implemented from May 10 last year, was announced by Finance Minister P Chidambaram to allow a Service Tax defaulter to pay dues without any penalty or late payment charges.
Under the scheme, a person was to make a declaration to the designated authority on or before December 31, 2013.