Editing Ottoman Interregnum (section)

===Mehmed and Musa===
[[Manuel II Palaiologos]], the Byzantine emperor, had allied with Süleyman. Mûsa, therefore, [[Siege of Constantinople (1411)|besieged Constantinople]].{{sfn|Ostrogorsky|1969|p=557}} Manuel called on Mehmed to protect him, and Mehmed's Ottomans now garrisoned Constantinople against Musa's Ottomans of Thrace. Mehmed made several unsuccessful sallies against his brother's troops and was obliged to recross the [[Bosporus]] to quell a revolt that had broken out in his own territories. Musa now pressed the siege of Constantinople. Mehmed returned to Thrace, and obtained the assistance of [[Stefan Lazarevic]], the [[Despotate of Serbia|Serbian Despot]].

The armies of the rival Ottoman brothers met on the [[Battle of Camurlu|Plain of Chamurli]] (now [[Samokov]], [[Bulgaria]]). Hassan, the [[Agha (Ottoman Empire)|Agha]] of the [[Janissaries]] of Mehmed, stepped out before the ranks and tried to get the troops to change sides. Musa rushed towards Hassan and killed him, but was himself wounded by an officer who had accompanied Hassan. Musa's Ottomans fought well, but the battle was won by Mehmed and his allies.{{sfn|Spuler|Bagley|Kissling|1996|p=14}} Musa fled but was later captured and strangled.{{sfn|Nicol|1972|p=327}} With Musa dead, Mehmed was the sole surviving son of the late Sultan Bayezid I and became Sultan Mehmed I.

The Interregnum was a striking example of the [[fratricide]] that would become common in Ottoman successions.