THE crew of the International Space Station have triggered an alarm after smelling smoke and burning plastic on board, it was reported. The alarm went off in the Russian Zvezda module of the ISS early this morning and was reportedly broadcast by NASA. ReutersSmoke and burning were detected on the Zvezda module of the ISS[/caption] According to RIA News astronaut Oleg Novitsky told Mission Control in Moscow that an alarm was triggered on board and the crew saw and smelled smoke. Sensors later detected the presence of harmful substances in the area of the medical cabinet in the Zvezda module. Astronaut Toma Pesce said that the smell of burnt plastic or electronics penetrated from the Russian to the American segment through the ventilation system. The source of smoke and the smell of burnt plastic has not yet been detected. But the crew has turned on the system for removing harmful impurities from inside the module. It was later reported that the situation had been brought under control and all systems were working as normal. A spacewalk planned today will also go ahead as scheduled. More to follow… For the latest news on this story keep checking back at Sun Online. Thesun.co.uk is your go to destination for the best celebrity news, football news, real-life stories, jaw-dropping pictures and must-see video. Download our fantastic, new and improved free App for the best ever Sun Online experience. For iPhone click here, for Android click here. Like us on Facebook at www.facebook.com/thesun and follow us from our main Twitter account at @TheSun.