The resignation comes just hours before the national team is scheduled to depart for the Caribbean.
It is said that he has resigned over a payment dispute.
In addition to being the national team's fast bowling coach for the West Indies tour, Vaas is also a regular bowling coach of the Sri Lanka A team.
Earlier today, SLC announced that fast bowler - Lahiru Kumara has been tested positive for Covid-19 and it is said he would be replaced by Suranga Lakmal during the tour.
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