Kejriwal, who worked with Missionaries of Charity in Kolkata for a short period in 1992, has often fondly recalled his association with Teresa.
Working with the organisation, founded by the noted missionary, was his first brush with public service, he has said.
AAP leader Kumar Vishwas also accompanied Kejriwal. Vishwas clarified that he will be bearing his own expenses.
The Chief Minister will return to the national capital on September 5.
External Affairs Minister Sushma Swaraj and West Bengal Chief Minister Mamata Banerjee have also separately left for Rome with their delegations.
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