A teenager is in intensive care after he drunkenly slid down a glass shopping centre roof and crashed onto stone steps . Jacob Polyakov cracked his head on the floor after plunging off the edge of the SEC 'Globe ' centre in Kiev , Ukraine . His friend Jamal Maslow , who fell off the roof first , broke his coccyx after landing on the corner of one of the steps . Witnesses rushed over to the teenagers , both 17 , after the accident and found Mr Maslow in huge amounts of pain . Mr Polyakov was unconscious . Pavel Yaremenko was at the shopping centre and said the problems started when the boys began to 'fool around ' at the top of the building . The 29-year-old said : ' I do n't think they really intended to jump , but their friends were encouraging them so they decided to do it . 'Once they started picking up speed they must have regretted it but it was too late to stop then . A teenager is in intensive care and another has a broken coccyx after they drunkenly slid down a glass shopping centre roof and crashed onto stone steps in Kiev , Ukraine . Jacob Polyakov ( orange top ) and Jamal Maslow ( blue top ) , both 17 , quickly gathered speed and hit the stone steps below the edge of the roof with some speed . Witnesses rushed over to the teenagers , both 17 , after the accident and found Mr Maslow in huge amounts of pain . Mr Polyakov was unconscious . 'They really hit the ground fast . ' The video was captured by one of the boy 's friends . Both Mr Maslow and Mr Polyakov were taken to hospital .
Jacob Polyakov plunged off the SEC 'Globe ' centre in Kiev , Ukraine . 17-year-old cracked his head open and is now in intensive care . Friend Jamal Maslow broke his coccyx after landing on corner of step .