Yesterday, Detective Senior Sergeant Tim Leitch said police would look at whether they should have done anything differently.
"We've got to remember ... a protection order is a piece of paper, and it requires the will of all to make sure people adhere."
Jill Proudfoot, director of family violence support group Shine, said protection orders were a "useful tool", but needed to be enforced consistently. They were unlikely to work with abusers like Singh - who was bailed after making 38 abusive and threatening phone calls to Ms Lata in 26 minutes - who show such obsessive behaviour.
"She [Ms Lata] would have been probably pretty dismayed that he was granted bail on condition that he didn't contact her or go to her house, because there was very low likelihood that he would take any notice of that."
Judge Justice Ronald Young said Singh had a "deeply worrying" attitude to women.