Newham police officers were called to a park in East London after two 8ft boa constrictors were found near a children's playground.
The snakes were spotted hidden in some large bushes in Plashet Park, East Hamon on July 13.
Officers caught the snakes using a little picker and a brown evidence bag, reports the Mirror.
Boas have to handled by two people as they are incredibly powerful.
The snakes were later handed over to the RSPCA.
According to the Newham Recorder, each of the snakes measured between six and eight feet in length.
Worried parents called 999 after they spotted the snakes near the playground.
According to the Daily Mail, the snakes are believed to have been set free in the park by an owner who could no longer afford to keep them.
Boas can grow up to 13 feet (4 meters) long and weigh more than 100 pounds (45 kilograms).
Adult boa constrictors in captivity feed on rats, mice, rabbits and even chickens. The snakes kill their prey by asphyxiating them.
The snakes were spotted up trees, on rooftops and climbing up drains in North London.
Although they are not venomous, the animals face a possible cull after the London Invasive Species Initiative, marked them as a 'non-native species of high concern'.
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