"I don't want to say anything at the moment," said Harbhajan.
According to team sources, Harbhajan was given the on-field umpires' report suspecting his bowling action in the second cricket Test against Bangladesh yesterday afternoon and he has forwarded it (the report) to the Board of Control for Cricket in India (BCCI).
On the instructions of the International Cricket Council (ICC), the BCCI would now appoint a biomechanics expert to work on his bowling action.
It is believed that Harbhajan's elbow-flexion while bowling the 'doosra', a delivery that leaves a right-handed batsman, was noted 22 degrees, which is well beyond the ICC's prescribed limits of five degrees for spinners.
The previous occasion when he underwent remedial work in London for a suspect bowling action was in November 1998.
Harbhajan is the sixth player to be reported to the ICC under its revised process to deal with potentially flawed actions in 2004.
Pakistan paceman Shabbir Ahmed, Sri Lankan off-spinner Muttiah Muralitharan, Blessing Mahwire of Zimbabwe and Abdul Razzaq of Bangladesh have all had their actions reviewed and undergone remedial work to address concerns identified by members of the elite panel of ICC umpires and referees this year.