"The three-year-old victim was travelling on a motorcycle with her kin. When their vehicle reached Waghoba Khind, it skidded and the girl fell into the flood water. She was washed away and her body was recovered later," police said.
In another incident, a youth fell into a swollen nullah in Palghar town and was washed away. His body is yet to be recovered, they said.
Similarly, in separate incidents in Virar and Vasai townships in the district, two persons fell into the gushing waters of nullahs and were swept away.
"Their bodies are yet to be recovered," police said.
"The body was fished out and sent for a post-mortem," the officials said.
Thane city received 340 mm rains throughout yesterday, the weather bureau of Thane Municipal Corporation (TMC) said.