BEIRUT (Reuters) - Lebanon's Prime Minister Najib Mikati may resign on Friday after deadlock in his cabinet over preparations for a parliamentary election and a dispute over extending the term of a senior security official, ministerial sources said.

Speaking at the end of a two-hour cabinet meeting, they said President Michel Suleiman had suspended any further government meetings after Mikati's ministers failed to agree on the two issues. Mikati was due to make a public statement at 7.30 pm (1.30 p.m. EDT), Lebanese media said.

(Reporting by Laila Bassam; Writing by Dominic Evans; Editing by Jon Hemming)