Lebanese authorities must open an immediate and independent investigation into the capsizing of a boat carrying migrants off the coast of Tripoli that killed at least seven people, the Euro-Med Human Rights Monitor said Sunday. A dinghy carrying Lebanese, Syrian and Palestinian migrants sank late on Saturday off the coast near Tripoli, allegedly after Lebanese naval forces rammed the vessel as the smuggler tried to evade capture. With dozens possibly dead and Lebanese authorities denying any role in the sinking, rights groups are demanding a full probe into the deadly capsizing. “It is necessa…