People surround the boat "Comandante Ribeiro" that sank while carrying 70 people during a search and rescue mission in the Xingu River, Para state, Brazil, Aug. 23, 2017. [Photo: AP]

Chinese President Xi Jinping on Friday sent a message of condolences to his Brazilian counterpart Michel Temer over two recent boat accidents causing heavy casualties.

In the message, Xi, on behalf of the Chinese government and people, expressed deep mourning for the victims of the tragedies, and offered deep condolences to the families of the dead and injured.

Two boats capsized separately on Wednesday and Thursday in different parts of Brazil, killing 39 people in total.