NEW DELHI India said on Friday that four of its nationals had been detained near the Libyan coastal city of Sirte, an area that is under the control of Islamic State militants, but that it had secured the release of two of them. The Indian men, who have been in Libya for more than a year and were working at Sirte University, were detained at a checkpoint about 50 km outside Sirte late on Wednesday while on their way back to India, Foreign Ministry spokesman Vikas Swarup said in a statement. He later tweeted that two of them had been brought back safely to the university