JERUSALEM: A Gaza hostages campaign group called Monday for an investigation into the alleged leak of confidential documents by an ex-aide to Israel’s premier, which may have undermined efforts to secure their release. A court announced Sunday that Eliezer Feldstein, a former aide to Benjamin Netanyahu, had been detained along with three others for allegedly leaking documents to foreign media. The case has prompted the opposition to question whether Netanyahu was involved in the leak — an allegation denied by his office.