NEW DELHI (AP) — Indian police say they’ve arrested a Pakistani bomb maker who helped an Indian terror group blamed for a series of bombings in the nation’s cities.

Police official Sanjeev Yadav says Zia Ur Rehman and three of his associates were arrested in the western Indian state of Rajasthan. He says police found a large cache of bomb-making materials and were questioning the men in New Delhi on Sunday.

Police say Rehman was associated with the Indian Mujahideen terror outfit. The group has been linked to the banned Pakistan-based Islamist rebel group Lashkar-e-Taiba.

The government outlawed Indian Mujahideen in 2010 after it was suspected of involvement in an attack on a cafe popular with foreigners in the western Indian city of Pune in which 17 people died.