The two accused identified as K V Janannathrao and Mayank Sharma, cabin crew of Air India, were nabbed and remanded in police custody till May 18, police said.
According to police, there are two groups in Air India cabin crew association and the groups have a dispute over the presidential post and the association office.
While the dispute was getting accelerated day by day, the two accused started posting unparliamentary words against opposite group when one of members of the latter group complained to the cops, police said.
As the police started verifying the facts upon the complaint by Sagar Karnik, who is also an Air India employee, they stumbled upon various objectionable contents the accused posted on Orkut and Facebook social networking sites.
"Besides, using bad language about the opposite group and their leaders, the accused had also passed unparliamentary language against the PM office, Home Ministry, Supreme Court. The accused also gave death threat to the complainant over union dispute," said a police officer from Cyber cell police station, but he refused to divulge the exact content.
The duo was booked under relevant sections IPC and Information Technology.