He was shifted to an undisclosed location for questioning.
The authorities concerned have not confirmed his detention, nor detailed the reasons behind the action.
A senior SSGC official, however, said that Warsi had been detained from outside the office on Sir Shah Muhammad Suleman Road near Civic Center.
Read: Rangers raid SBCA, collect stash of data
“Warsi was picked up by personnel in plain clothes while he was leaving for home from work,” he said. “But we do not know the reason behind the detention or where he is now.”
Warsi had joined SSGC in 1977 as a trainee engineer.
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