After the demise of Quaid-e-Azam, who became Pakistan of Muslim League in 1948?

After the demise of Quaid-e-Azam Muhammad Ali Jinnah on September 11, 1948, Chaudhry Khaliquzzaman became the leader of the Pakistan Muslim League. While Liaquat Ali Khan continued as the Prime Minister and held major power, the party leadership transition in 1948 specifically involved Khaliquzzaman taking over as the party head.