Parents of Ehtesham Bilal, 19 — who went missing on October 28 but reappeared on Friday in an online post, wielding weapons under the Islamic State banner — asked their son to return home and appealed to Ansar Ghazwat-ul-Hind chief Zakir Musa to help them.Distraught and refusing to take meals, Bilal’s mother appealed to her son to shun the militant outfit. “Whatever group you have joined, please return. I appeal to Zakir Musa and will pray for his long life, help me in returning my son,” she said in a video.Bilal, who was a student at Sharda University in Noida was reported missing on October 28by his parents. His father, who owns a hardware shop in Srinagar, expressed shock over his son’s purported audio message,where he pledges allegiance to the IS-motivated Jundul Khilafah and to IS’s Iraq-based leader Abu Bakr Al-Baghdadi.“I heard your audio message. You talk about Islam. Islam says heaven lies under the feet of mother. Islam warns against disobedience to your parents. I order you to return to your family, Your mother hasn’t eaten anything [since you went missing],” he said.On Friday, a six-minute audio, attributed to Bilal, and pictures, where he was wielding a gun and weapons strapped with an IS flag in the backdrop, were uploaded on social media. “I was looking into the eyes of those 100 kufaars (non-Muslims) when they attacked me in groups like dogs. I was defending my Afghan muslim brothers. I was even then an advocate of khilaf (Islamic State)…and have chosen the path of jihad,” Bilal purportedly says in the audio.He was apparently referring to a clash that took place between local and Afghan students at Sharda University on October 4. A senior counter-insurgency police officer told The Hindu that Bilal has joined militant ranks and his movement was traced to Srinagar and Pulwama. “We are investigating the matter,” the officer said.National Conference vice-president Omar Abdullah described the development as “a worrying trend”.“If this is genuine, it’s hugely worrying. Sometimes, seemingly small actions have huge consequences. If what happened to him at Sharda University has led him to choose such a destructive path, it’s even more tragic. One more life on the path to ruin and one more family in turmoil,” Mr. Abdullah tweeted.