SRINAGAR  - A trans-Kashmir bus service resumed Thursday after it was suspended in the wake of massive demonstrations in the Kashmir. Anti-India protests hit the  valley last week, forcing authorities to halt the route. The demonstrations were triggered by police firing on Muslim protesters, which left at least 22 people dead. "The bus service has started again," Indian police officer Pervez Ahmed said, adding that 60 people had departed for Pakistan Occupied Kashmir. Most of those travellers were residents of Pakistan Occupied Kashmir, eager to go home after witnessing weeks of protests, Ahmed said. The service began in 2005, a year after India and Pakistan launched a peace process. Meanwhile on Thursday, hundreds of students in Srinagar took to the streets carrying black and green flags, symbolising mourning and Islam. Meanwhile, Pakistani troops on Thursday fired mortars at Indian army positions across the Line of Control, the Indian army said. Pakistani troops launched five mortar shells towards Indian forward posts in the southern Nowshera sector, army spokesman SD Goswami told AFP. "The Indian army exercised restraint and did not retaliate," he said, adding there were no casualties or damage. He said that Indian troops went on high alert to "thwart any evil designs of the enemy."  India in the past has accused the Pakistani army of providing covering fire for infiltrating militants. Last month India accused Pakistani soldiers of crossing the ceasefire line known as the Line of Control and killing an Indian soldier - allegations Islamabad denied.