A 42-year-old man hailing from Maharashtra's Sangli district and his six-year-old son drowned at a beach in Oman while his daughter went missing, a family member said on Wednesday.

Shashikant Mhamane, his wife and their children Shreya (9) and Shreyas (6), who lived in Dubai, were visiting neighbouring Oman on Sunday for a day-long trip, said Mhamane's brother.