Funeral services were held Thursday for the 3-year-old boy who police say was killed by his father in a murder-suicide on the Upper West Side.
Kirill Kanarikov was memorialized Thursday morning at a Russian Orthodox Church on East 93rd Street in Manhattan.
Police believe Kirill was thrown from the roof of a West 60th Street building Sunday by his father, Dmitriy Kanarikov, who then jumped to his own death.
Dmitriy and his estranged wife Svetlana Bukharina were in the midst of a bitter custody battle.
Sunday was the father's first unsupervised visit with the boy.
The grieving mother issued a statement earlier this week detailing a history of domestic violence between the couple.
She says the boy's father never made any threats toward their son.