He suffered a complication during surgery and while in ICU went into cardiac arrest.
The deceased were identified as Anand Henry (42), his wife Alice Priyanka (40) and their twin boys Noah and Nathan (four).
The late Congress leader's ability to deliver long speeches engagingly was so effective that it came to the rescue of the party during a high-profile event three decades ago.
Musthafa was the minister for food and civil supplies in the Karunakaran ministry from 1991-1995.
The deceased was 60-year-old Salim Mannel, a local CPM leader.
He tragically died while attending Krishi Darshan on Doordarshan around 6.30 pm on Friday.
Beckenbauer won the World Cup with Germany in 1974.
He directed Mohanlal and Mukesh in Chhayamukhi
In Thiruvananthapuram, his body will be kept for public homage at his son's house in Edapazhanji's Vivekananda Nagar and CPI headquarters in Pattom.
He was the state secretary of the Communist Party of India (CPI) since 2015.