The gunmen were said to have stormed ward III venue in Obeagu Awkunanaw of Enugu South Local Government Area.
Other attendees sustained gun injuries and were rushed to a medical facility to receive treatments.
An APC chieftain and the Director-General of Voice of Nigeria Osita Okechukwu has condemned the act.
He called for calm amongst party members in the state, asking the security agencies to unravel the incident and bring the perpetrators to book.
A festering leadership crisis has plagued the Enugu State chapter of the APC, despite a state congress held last year to try and bring cohesion in the state chapter,
Three factions emerged claiming leadership and control., with the third faction claiming authority after the state congress.
World News