i guess you are at the 2nd stage already...
1st Stage: Body checkup, Eye Check..
2nd Stage: Psychology test\
Final Stage: Interview by Officers..
Most probably, after your 2nd test. you will wait about 1 wk to a
month for a letter to reach your house, telling you the
result..
The final test will have 2 officers interviewing you.. ask you
about what do u see yourself in 5 years time.. maybe ask about your
secondary school life, why you want to join police.. Will you be
working more than 5 years in the force.. And many more questions
until they are satisfied..