I found these words in The Hindu and search their meaning but not able to find exact meaning:
The recent encounter killing of two Maoists in Wayanad in Kerala is suspected to have been the trigger for the foiled rail sabotage bid.
I found meaning of these words like below
foiled – prevent (something considered wrong or undesirable) from succeeding.
sabotage – deliberately destroy, damage, or obstruct (something), especially for political or military advantage.
Can anyone please tell me the what this sentence tells us?