From the Deccan Chronicle: Terror suspects in city shoot at unarmed cops
The reasons I think India is particularly vulnerable to Islamic terrorism are many, and I should put together a thoughtful post about what I think those reasons are. But sending unarmed cops to arrest jihadis is certainly one of them.
Hell, in the US the cops won't arrest low-level drug users without a SWAT-Team backup. (Not that that's a good idea either, but it serves as a comparison.)