Later at night,
Antaji was returning from Narela when his troops were intercepted by a huge army on the outskirts of Delhi in the night of 16–17 January. The Marathas were completely taken by surprise, but they fought desperately and hurriedly retreated towards
Faridabad, 30 km from Delhi with heavy losses. The next day, it became known that the unidentified foe who had treacherously lead a surprise attack on the Marathas, the night before was
Najib-ud-daula, a courtier of the Mughal emperor. Najib betrayed the emperor and his
wazir at the most critical time and moved out of Delhi with his 20,000 well equipped troops to join the invader's camp. As a result, Abdali entered Delhi with Najib-ud-Daula on 28 January 1757, and taken to the
Red Fort unopposed by the Mughal Emperor in humility. The Mughal Emperor was arrested and Najib was put in charge of the administration of Delhi. == See also ==