Police officials said Dar, a school dropout who had earlier worked in a sawmill near Srinagar, was reported missing since late last year.
The JeM has been active in Kashmir since its founding in 2000 and India holds it responsible for attacking its parliament building in New Delhi in 2001, an assault that brought the nuclear-armed neighbours to the brink of war.
The JeM has been designated a ‘terrorist’ organisation by the UN, UK and the US, and even, under foreign pressure, proscribed in Pakistan since 2002.
But its founder, cleric Masood Azhar, freely roams the country, holding public meetings and fund-raising drives.
Indian efforts to have Azhar designated an international terrorist have long been been blocked by Pakistan’s close strategic ally China.
India claims Pakistan, which seized a third of Kashmir after independence in 1947 and lays claim to the rest, fuels the disputed province’s 30-year Muslim insurgency for an independent homeland in which over 70,000 people had died.