New Delhi, April 5 -- In a significant breakthrough, Punjab Police has arrested two more perpetrators in connection with the recent blast outside the BJP headquarters in Chandigarh, bringing the total number of arrests in the case to seven, a senior police officer said on Sunday.

Earlier, police had arrested five other accused in the case-Mandeep, Rubal Chauhan, Charanjit Singh, Jasvir Singh and Balwinder.

According to police, the accused are believed to be part of an ISI-backed module and were receiving instructions from handlers based in Germany and Portugal, reported PTI.

Punjab Director General of Police Gaurav Yadav said Gurtej Singh and Amanpreet Singh were arrested from Rewari in Haryana on the night of April 4 during a joint op...