Police in Tamil Nadu are on high alert following intelligence reports that six Lashkar-e-Taiba (LeT) terrorists have infiltrated into the state. One of the six is believed to be a Pakistani national, the others are believed to be from Sri Lanka. Police are also on alert in neighbouring Kerala, with districts adjoining Tamil Nadu ordered to carry out extra inspections. “We have received this information and have alerted our force. We want the public to inform the police if they see any suspicious person or any suspicious activity," a top Tamil Nadu police officer said. Security in Chennai and Coimbatore has been strengthened, with hotels, airports, railway stations, theatres, malls and places of worship under close watch. At least 2,000 police personnel have been deployed around Coimbatore, where a red alert has been sounded. According to reports, the terrorists are believed to be hiding in the city.