LISBON (Reuters) - Portugal's Prime Minister Luis Montenegro said on Wednesday he would submit his year-old minority government to a motion of confidence, which could lead to its dismissal if the two main opposition parties vote to reject it, as they have indicated.

LISBON - Portugal's cabinet has decided to go ahead with a motion of confidence in the centre-right government that is opposed by the main opposition parties, it said on Thursday, with a parliamentary vote expected to take place next Tuesday.

Portuguese Prime Minister Luis Montenegro said he plans to seek a confidence vote in a parliament where he only has minority backing, after struggling to put an end to speculation about potential conflicts of interest related to a company owned by his family.