The boycott by the four AIADMK MLAs was announced earlier by party legislature leader A Anbalagan to protest against 'style of functioning of Kiran Bedi'.
Principal Opposition AINRC MLAs too were conspicuous by their absence, but the reason for it could not be ascertained immediately.
Their absence raised eyebrows as AINRC, along with BJP, has been defending Bedi over attacks by ruling Congress and AIADMK on her 'style of functioning.'
Chief Minister V Narayanasamy alone had made a brief appearance at the event, also attended by BJP functionaries.
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The Congress government and Bedi have been at loggerheads over a host of issues, including medical admissions and induction of three nominated MLAs, ever since she assumed office in 2016.
Narayanasamy had said on January 24 that he would soon meet the President and Prime Minister to apprise them of the "undemocratic style of functioning" of Lt Governor Kiran Bedi and her 'interference' in routine administration.
Bedi presented appreciation certificates to those who did services in various developmental and literary activities.