A passenger aircraft carrying nearly 100 passengers skidded off a runway at Rendani domestic airport in Manokwari, West Papua, into a shallow river, injuring about 20 people on Tuesday.
The Merpati airline-operated Boeing 737 bounced off the tarmac and came to a halt with its tail section in the river, about 200m from the end of the landing strip, according to Australia's ABC News.
Civil aviation director general Herry Bhakti Singayuda said all 103 passengers and six crew members were safe.
"Some are injured. They have been rushed to hospital," Singayuda said.
Heavy rain and fog has been suspected to be the primary reason behind the crash.
The plane was flying a routine domestic route from Sorong in the West Papua province to Manokwari.