Castlemilk.The force is investigating after an incident in Downcraig Drive at around 3.20pm Saturday.Locals said there was a large police presence in the area following the alleged serious sexual assault.Offices say they were told a 17-year-old female was subjected to a sex attack in a property.Two men, aged 19 and 21, were arrested but released pending further enquiries.A Police Scotland spokesman said: "A report was received shortly after 3.20 pm on Saturday, August 22 of a serious sexual