MUMBAI, June 7 -- A businessman from Mazgaon was attacked by unknown people on Thursday, purportedly because his tip-offs about illegal smuggling rackets operating out of Chhatrapati Shivaji Maharaj International Airport (CSMIA) resulted in several arrests by the Customs department. Motorists on the Bhagwan Adinath Road in Mazgaon alerted the Byculla police on Thursday evening of a group attacking a man who laid in his blood. The victim was identified as Mohammed Aslam Patel. Constable Uday Vichare said Patel suffered grievous head injuries. There was also an iron rod lying next to him, he added. Patel was rushed to the JJ Hospital from where he was shifted to the Saifee Hospital. "We have been told that he gave a tip-off about people who smuggled cosmetics and gold from foreign countries. Based on this, the Customs department seized goods and made arrests," said a police officer. The accused allegedly hired a contract killer. The police are tracing the accused through CCTV cameras. Vinay Dalvi...