PSA President Watson Duke surrendered himself for interrogation by police around 2pm this afternoon.
Duke went to the Central Police Station, Port of Spain, with criminal defence attorney John Heath.
He will be interview by police officers investigating an allegation that he sexually assaulted a 33-year-old Chaguanas woman at the Hyatt Regency in Port of Spain on Tuesday.
Duke has already denied the allegation.
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Police are searching for PSA leader Watson Duke in relation to an alleged sex crime.
The trade union leader accused the crime was expected to give a statement to police today.
Sources tell CNC3, the union leader was supposed to be accompanied by his attorney to the police station this afternoon.
Police officers went to the PSA's head office a short while ago to begin questioning the union leader but he was not there.
Yesterday duke was identified as a possible suspect in a crime which allegedly occurred at the Hyatt hotel on Tuesday.
The governmet has issued an order to all ministries and state sector entities, to cut expenditure by 7 percent, improve effecicency and innovation and reduce wastage.
But the Prime Minister's announcement seems to have struck a nerve for the labour movement.
This morning the PSA and NATUC say although the PM said the new measures do not mean workers will lose jobs, the unions are still concerned.