Ireland completed their World Twenty20 preparations with a tight five-run win over Bangladesh in Colombo.

Middle-order batsman Elton Chigumbura struck a half-century and claimed a crucial wicket as Zimbabwe defeated Bangladesh by 38 runs in the first match of the tri-nation series in Mirpur.

Bangladesh completed a comprehensive series win over Ireland, with a 79-run victory in the third and final one-day international in Mirpur.

Ireland had no answer to an unbroken century stand between Bangladesh captain Mohammad Ashraful and opener Shariar Nafees as the hosts won the first one-day international in Mirpur by eight wickets.

Bangladesh need a minor miracle if they are to deny South Africa a series whitewash after the hosts were dismissed for 143 in the third and final one-day international in Mirpur.