THANE, July 24 -- A 27-year-old man was arrested within an hour of allegedly suffocating his girlfriend to death with a pillow inside a hotel room in Thane after a heated argument over his suspicion that she was cheating on him, police said. The police traced and arrested the accused near the Masunda Lake on Wednesday. According to the police, the woman was married but had been living separately from her husband. Around five years ago, she came in contact with the accused, Nandkishor Gadekar, 27, a resident of Dombivli, through social media. The two, who hailed from Latur district, grew close over their shared roots and eventually entered into a relationship. Investigators said the couple frequently met at hotels to spend time together. Police said that in recent days, Gadekar had begun suspecting that the woman was involved with another man after noticing that she was frequently on phone calls. Against this backdrop, the couple decided to meet in Thane on Tuesday and checked into a room at Maharaja Hotel, a budget hotel in Jambli Naka, at around 3pm. Bharat Chaudhary, senior police inspector of Thane Nagar police station, said the couple got into a heated argument between 7pm and 8pm over the woman's alleged relationship with another man. "During the argument, Nandkishor allegedly assaulted the woman before smothering her to death with a pillow. He then fled the hotel after committing the crime," Chaudhary said. "He was heavily intoxicated state at the time of his arrest," Balasaheb Patil, deputy commissioner of police, Zone I said....