Malta’s Prime Minister Robert Abela says he is under investigation for his role in the death of at least five migrants who tried to sail from Libya to Italy.

Monitors of Mediterranean crossings said five people died and seven others went missing while their boat was in distress off Malta’s coast this week.

The boat was reportedly carrying around 55 people. It eventually returned to Libya under disputed circumstances after being spotted by a fishing boat.

On Thursday, Malta’s Repubblika civil rights organisation filed two police reports alleging criminal inaction on the part of Abela and Maltese armed forces commander Jeffrey Curmi. Its second report was filed against 11 crew members of a Maltese patrol boat who allegedly cut the cables of the migrant dinghy’s motor.

Investigators would probe “the homicide… of several irregular migrants at sea”, he added. “The charge for homicide carries with it a life sentence,” the Maltese premier said. Maltese police reports are automatically investigated. Criminal proceedings can then be launched depending on how much evidence is found.