Mission not unlocking (Solved)

[Ravie_HD 28]

I am currently at act 1 mission 7. I went and searched for the missing persons and found 6 of them. Now at this point the bonus mission should unlock but that's not happening. Do I need to progress further in the story or is  my game bugged?

 

Update: After i finished the first mission in Act 3 i got the phone call from the serial killer and the last investigation unlocked

Edited February 3 by Ravie_HD