Sikh Occupation of Lahore

In the year, 1761 the Sikhs besieged Lahore and after facing no opposition of Durrani forces Sikhs captured Lahore.

Background
After Victory in Third Battle of Panipat, Ahmad Shah Durrani sent General Nuruddin with 12,000 soldiers to chastite Sikhs.Charat Singh Sukerchakia attacked Nuruddin's army at Sialkot.Nuruddin escaped and Sikhs won great victory in the Battle of Sialkot (1761).

Afghan General Khwaja Obed Khan was also sent to punish Sikhs.Khwaja obed want to attack Charat Singh at Gujranwala but before he was attacked by Sikhs led by Jassa Singh Ahluwalia, Hari Singh Dhillon and Jai Singh Kanheya.The afghan forces were surrounded and Khwaja fled the battlefield. Sikhs once again defeated the Afghans in the Battle of Gujranwala (1761).

Siege of Lahore
The Sikhs gained enough confidence to capture Lahore after back to back victories.They met at Amritsar on Diwali (22nd Oct 1761) and decided to capture Lahore.Sikhs besieged Lahore, khawaja obed did not faced the Sikh attack, Sikhs entered the Lahore city, plundered the city captured the Royal mint and struck their coins bearing-",

"Sikka Zad dar Jahan Bafazat-i-Akal, mulk-i-Ahmad garift Jassa Kalal."

which means,

"The coin struck by Grace of God in the country of Ahmad captured by Jassa Kalal.".