Leitirm closed in on a place in the Lory Meagher cup final after hammering Lancashire 2-20 to 1-8.
Leitrim are now top of the Lory Meagher table with one round of games remaining.
Monaghan were docked four points and after defeat to Longford have been eliminated from the championship.
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Leitirm face Louth on Saturday, a result will see them progress to a Croke Park final against Longford.
