LUCKNOW, July 22 -- Lucknow police have stepped up security arrangements across the city in view of protests by various political parties and organisations over the developments in Delhi. The move comes after demonstrations were held in parts of Lucknow on Monday and Tuesday, prompting the police commissionerate to strengthen deployment and issue fresh instructions to officers at all levels to maintain law and order. "We have strengthened security arrangements across Lucknow. All police stations have been instructed to remain on alert, maintain strict vigil in their respective areas and ensure that law and order is not disturbed," police commissioner Amarendra Kumar Sengar said. Joint commissioner of police (law and order) Bablu Kumar said adequate police force had been deployed at sensitive locations and field officers asked to closely monitor the situation. "No permission is being granted for protests or demonstrations on public roads. Necessary police deployment has been made to ensure public order and traffic movement remain unaffected," he said. Additional deployment has also been made at key intersections, government establishments and other vulnerable locations as a precautionary measure. Authorities said the situation is being monitored continuously and appropriate action will be taken to prevent any disruption to law and order....