The fire started around 1:45pm, the Fire Service said
Locals found the bodies in an estuary of the Naf River in the Shabrang Union, said Teknaf Police Station OC Mainuddin Khan.
The two were identified as Saddam Hossen (16) and Anwar Sadek aka Ayyub (8), who hailed from Teknaf’s Sadar Upazila.
Three boys went missing on Tuesday after a tourist boat overturned on the river.
The body of Md Amin (9) was recovered from the river near the new jetty in Teknaf on Wednesday.
Police will turn over the bodies to the families, the OC said.