 Complete the following phrase:  After the completion of the teacher training course on 18 December 1970, Wimalaratne was appointed as an Assistant Teacher in the Ministry of Education with effect from 1 January 1971 and was attached to the Abhayapura College in Trincomalee. Wimalaratne was arrested at his home on 16 March 1971 by the Trincomalee Police on suspicion of involvement in the 