In Tami Nadu, Ramkumar, the prime accused in engineer Swathi murder case, has been arrested in Shencottah late midnight. Swathi was brutally murdered at Nungambakkam railway station on 24th of June. Police had formed ten special teams to investigate the crime. <br/><br/>Chennai City Police Commissioner T K Rajendran said that Ramkumar is an engineer hailing from Tirunelveli district and was staying in Chennai. He refused to divulge more details for the sake of investigation.