The Incident that took place in madurai which created a problem in Tamil Nadu

Hello friends,
The recent Bomb that was found in the bridge which was supposed to be kept targeting LK Advani has raised many issues in Tamil Nadu. Chief Minister Jayalalitha had ordered the police to act quickly and find the person who was involved in this incident to keep the bomb in the bridge. Though it is said that a shirt has been found and the tailor who made the shirt has been investigated but it is said that the police is unable to find any other clue to proceed, it is also stated that the suspects are said to be those three individuals who traveled in the motor vehicle and crossed the road before the bomb was found but still there is no further proceedings. What do you friends think about this problem faced by the government?