Thane Police has confirmed that a lookout notice has been issued against former Mumbai Police Commissioner Paramvir Singh. The notice is related to the extortion case registered against Singh by the builders.<br />'' <br />'' While a similar notice for 27 others booked in an extortion case last month will be issued soon.<br />'' <br />'' A Special Investigation Team (SIT) headed by the deputy commissioner of police will investigate the case.<br />'' <br />'' Paramvir Singh is accused of extorting crores of rupees by threatening several builders during his tenure as Thane Police Commissioner for nearly one year.<br />''  <br />