Sister Nirmala Joshi who heads the Missionaries of Charity after Mother Teresa passed away at an age of 81 on Tuesday.
A Missionaries of Charity official said Sister Nirmala was not keeping well for the past few days and her health was gradually deteriorating.
Her body would be brought to Mother House tomorrow morning and the funeral will be held at 4 PM.
"Any one who wants to pay respect can come to Mother House tomorrow", the official said.
On March 13, 1997, six months before Mother Teresa's death, Sister Nirmala was selected the Superior General of the Missionaries of Charity.
Sister Mary Prema was elected to succeed Sister Nirmala during a general chapter held in Calcutta in April 2009.
Sister Nirmala succeeded Teresa on 1997 and managed the trust. West Bengal Chief Minister Mamata Banerjee tweeted "Saddened at the passing of Sister Nirmala who headed Missionaries of Charity after Mother Teresa. Kolkata and the world will miss her."
(With PTI inputs)