The meeting held at the party's main center in Model Town was presided over by the former prime Minister and PML-N supremo Nawaz Sharif to devise its future course of action in the wake of arrest of its party president Shehbaz Sharif.
On Saturday, an accountability court granted the National Accountability Bureau (NAB) a 10-day physical remand of former Punjab Chief Minister and Pakistan Muslim League-Nawaz (PML-N) President Shehbaz Sharif in the Ashiana Iqbal Housing Scheme case.
Former premier Nawaz Sharif, who maintained a low profile in politics ever since his release from prison, chaired the CEC meeting.
Earlier, Hamza Shehbaz and Salman Shehbaz briefed Nawaz Sharif at his Jati Umra residence about the case against their father.
The body is expected to seek Sharif's remand when he is produced before the accountability court.
Pakistani authorities arrested on Friday opposition leader and younger brother of ousted prime minister Nawaz Sharif in connection with alleged corruption in a social housing scheme, the country's anti-graft agency said.
Shahbaz was apprehended during his appearance before NAB in Saaf Pani Company scam.More news: Pence to Step Up U.S. Criticism of Beijing
"We will prove that allegations against Shahbaz Sharif are baseless", he said.
Accusing previous governments of looting wealth of the nation he said the PML-N and PPP were a "union of corruption" and when they faced accountability, they start terming it a threat to democracy.
Khursheed Shah, the leader of Pakistan Peoples Party, condemned the arrest, saying it was an "insult of the Pakistan's parliament", and accusing the Khan government of "taking revenge from the Sharif family whereas, Khan has failed in its initial months of the government".
The bureau is also investigating Shehbaz Sharif in the clean water project scam, Paragon Housing Society scandal and Punjab Power Company corruption cases.
Information Minister Fawad Chaudhry said Shehbaz Sharif's was the first of several prominent arrests which will be made.
PML-N leader Rana Sana Ullah termed the arrest as a "political victimization", saying that they will use their legal rights to defend their leader as there is no solid proof against him.
"Joint opposition will be protesting against Shehbaz's arrest soon", he added. The PPP chairman said his party had no issues with accountability, but there must be no political victimisation in the name of accountability.