A metropolitan court on Saturday issued a non-bailable warrant against IPS officer Param Bir Singh and two other accused — Vinay Singh and Chhota Shakeel aide Riyaz Bhatti — in a case of alleged extortion where the accused threatened a hotelier and extorted money, reports Ahmed Ali. This is the second non-bailable warrant against the officer.A metropolitan court on Saturday issued a non-bailable warrant against IPS officer Param Bir Singh and two other accused — Vinay Singh and Chhota Shakeel aide Riyaz Bhatti — in a case of alleged extortion where the accused threatened a hotelier and extorted money, reports Ahmed Ali. This is the second non-bailable warrant against the officer.