According to the police, he was involved in a number of murders and crimes.
Lasantha is the main suspect in the murder of notorious criminal Sunshine Sudda in Dickwella. He was a resident of the Matara area and is said to be involved in 13 crimes including murder.
A police officer involved in the incident said that based on a statement made that the weapon used to kill Sunshine Sudda was hidden in the Kalutara North, Diyagama area the police had gone in search of the weapon. At that time, Tinker Lasantha had attempted to hurl a grenade at the police team and they had opened fire.