Munster made it two wins from two in their Rugby Champions Cup pool after seeing off the challenge of Saracens.
A low-scoring first half ended 6 - 3 to Munster, before the Irish province established a gap in the second '40.
After Andrew Conway's attempted try was ruled out by the TMO, Dave Kilcoyne powered over moments later to give Munster an unassailable lead.
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Ian Keatley also contributed a second drop goal in less than a week to secure the 14 - 3 win at Thomond Park.