Indians have caste rules that often prejudice them against any food they didn’t cook themselves, because you can only be sure your specific requirements were met if you made it yourself.
A camp stove and a saucepan, one could understand, but pressure cookers? No way.
Doesn’t a pressure cooker require a stove? Or do they have electric ones now?
In any case, I’m sure they are lying and were planning to make bombs. If the cops released them they are idiots, they should have just charged them with terrorism and found a way to let them stew in jail.
Or pressure cook in jail.
Something like that.
I was taught to Never cook rice in a pressure cooker, because the rice can easily clog the pressure relief ports. The only two pressure cooker legitimate cooking accidents I know of personally - involved rice.