"Police have started investigations into bike lifting cases that have occurred in the past few days in Srinagar. Four bikes were reported to have been stolen from different places in the city," a police spokesman said.
Security agencies are looking into the possibility of militants having stolen the motorcycles for use in subversive activities, police sources said.
In the past, militants have used stolen bikes to carry out attacks on security forces in Srinagar and elsewhere in the valley.
The common pattern in the four theft cases reported over the past few days is that all the stolen bikes are at least 13 years old.