He was 25 years at the time of his demise.
Jayaweera has won the Layton Trophy three years in the 54 and 60 kg category and has also won the Clifford Trophy 2014, 2015 and 2016.
Jayaweera has also won the Bronze medal at the international meet in South Korea.
He was a past pupil of Horana Thakshila Vidyalaya.
His last rights will take place at his home town in Matugama tomorrow, according to a Sri Lanka Boxing Federation Spokesman.
He performed outstandingly at last month’s Layton Trophy tournament.