Government counsel informed the court that if the accused are released on bail at this stage, their presence cannot be procured.
The marines -- Latore Massimilliano and Salvatore Girone - had contended that they had not committed any offence as alleged by police and that there was no justification in continuing their custody.
Earlier, their bail plea was rejected by a lower court in Kollam.
The Union government was impleaded in the case after Justice M K Balakrishnan of the Kerala High Court on May 22 directed the petitioners to implead the Centre.
The naval guards were arrested on Feb 19 and charged with murder of fishermen Valentine Jalastine and Ajesh Binki, who put out to sea from Neendakara in Kollam.
The marines, lodged in central prison, Thiruvananthapuram since March 5, have been shifted to Borstal school, which houses juvenile delinquents, in Kochi.
Kochi: The Kerala government on Monday opposed the bail pleas of two Italian marines, accused of shooting dead two Indian fishermen off the Kerala coast on February 15.
First Published: Monday, May 28, 2012, 20:34