One should do the following in case of doubt of terrorist activity:

1. Immediately inform the police if behaviour of a person seems doubtful.
2. Do not touch any unclaimed object such as purse, bag, tiffin, etc. in public places, such as shopping malls, cinemas, gardens, religious places, etc.
3. Cooperate in security check arranged for safety reasons at any place.
4. If you rent your house, you should provide the details of your tenant at the nearest police station. This is required under legal provisions.
5. Public places should be well equipped with CCTV Cameras.
6. While traveling in a bus or train, if you find that someone has left his luggage then do not attempt to open it or possess it.
7. Immediately inform the concerned authority to take charge of the matter.
8. If you have some neighbors whose behavior is very suspicious and awkward like not involving with anyone, have very unfriendly odd-looking visitors all the time, works late night on computer which generally the society finds very unusual then inform the police about him.
9. This is to cross-check if everything is fine and confirm that the person is not involved in any anti-social activity.
10. Inform police about unclaimed vehicles in your area.