Indonesia is reportedly planning to use crocodiles to guard a prison island for death-row drug convicts to ensure the prisoners do not escape. 

The reason for using the deadly animals as prison guards is that 'they cannot be bribed' unlike human guards, Indonesian authorities have said. 

Indonesia's National Narcotics Agency chief Budi Waseso has proposed the plan to ensure corruption in the prison system does not help drug traffickers get away. 

"You can't bribe crocodiles. You can't convince them to let inmates escape," Waseso reportedly told local media, according to AFP. 

"I will search for the most ferocious type of crocodile. We will place as many crocodiles as we can there," he added. 

Earlier this month, the anti-drugs official had equated drug dealers to 'mass murderers' and had said they did not deserve any pardon. 

Indonesia has executed several people on charges of drug trafficking, and had sparked international outrage after it executed two Australian nationals who were part of the infamous Bali Nine drug ring. 

The duo, Andrew Chan and Myuran Sukumaran, were killed by a firing squad along with eight other foreigners in April. 

Indonesia has said that it is in a state of 'drug emergency'. 

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