Patna, Oct 27 (ANI): Hours ahead of BJP's PM candidate Narendra Modi's 'Hunkar' rally in Patna's Gandhi Maidan, a crude bomb exploded at the city's railway station. The explosion occurred inside a toilet on platform number 10. According to initial reports, one person has been injured in the blast. The other bomb is being diffused. The injured has been taken to Patna medical hospital. Security has been beefed up and investigations are on in the incident.