SINGAPORE: SMRT confirms that 60 of the 102 drivers involved in a wage protest on Monday did not show up for work on Tuesday.
A  statement from SMRT says that some 60 drivers "did not turn up for work  in the morning, some of whom have valid medical reasons."
SMRT  adds that some bus services may have been affected on Tuesday morning as  a result, and it has activated other drivers to assist.
"We  continue to keep our communications open with the Service Leaders, and  are also working with the relevant authorities to find an amicable  resolution," says the statement. 
According to TODAY tweets,  police are at the SMRT's rented dormitory for its drivers in Woodlands  and two police cars are spotted. 
The tweets also quoted an SMRT  source as saying that no arrests have been made and that those who do  not turn up for work on Tuesday will be sacked.
An SMRT source  was also quoted by Today as saying that if workers do not have a valid  reason, they will be referred to higher management as it's a sit-in and  not a law and order problem. The spokesman also adds that no arrests  will be made and that police are only on standby.
According to  TODAY tweet, NTUC deputy director for industrial relations Desmond Choo  was earlier seen entering the dormitory compound.
The mobile clinic has left the dormitory compound, according to TODAY tweet, and there has been no other activity. 
- CNA/ck