Over the weekend, residents of Sri Lanka found themselves without power during a heat wave, but it wasn’t because of the oppressive temperatures. The energy minister for the island nation reported that the power outage was initially caused by a monkey when it came into contact with a grid transformer.

Sri Lanka has grappled with a struggling energy grid for years, and monkeys are making it worse. On Sunday at around 11:00 local time (12:30 AM EST), a nationwide blackout forced its 22 million residents to either turn to personal generators,

No more monkeys jumping on the power grid! A countrywide power outage that left many stuck without cool air during a sweltering hot day in Sri Lanka has been blamed on a rogue monkey who climbed into a power station south of the capital Colombo.