Mohammad Shariful Islam Shehzad, a 30-year-old who's reportedly a Bangladeshi, was arrested from Thane's Hiranandani Estate for allegedly stabbing Saif Ali Khan during a burglary attempt. Police said he likely entered India illegally and has been living in India for past four-five months. He's reportedly unmarried, earlier worked at a housekeeping agency and has been unemployed for some months.