Amritsar, March 31 -- An explosion took place outside the Bhindi Saidan police station in Amritsar district on the intervening night of Sunday and Monday, officials said. No one was injured. Deputy superintendent of police (DSP) Gurinderpal Singh Nagra said the blast occurred at around 1.30 am. "A forensic investigation is underway. Every aspect of the incident is being examined thoroughly to uncover the facts," the DSP said. "The explosion did not harm anyone. An FIR will be registered soon," he added. Terming it a matter of grave concern, Punjab Congress president and Ludhiana MP Amarinder Singh Raja Warring said such incidents have been rocking the border districts regularly. "The state authorities must take it seriously. Gangsters are already ruling the roost. The acts of sabotage like blasts have further added to the atmosphere of fear in the state, particularly along the border areas," he said. Former deputy chief minister and Gurdaspur MP Sukhjinder Singh Randhawa said the law and order appeared to have collapsed. "Criminals are carrying out crimes fearlessly. This failure cannot be ignored. Chief minister Bhagwant Mann must take the responsibility and resign from his position as the home minister," he said. He also highlighted the fatal shooting of a Rajtal villager and recovery of a delivery boy's body from Ranjit Avenue. "Under the AAP government, active leaders of opposition parties are being targeted," he added....