FAISALABAD - A complete shutter-down was observed on Saturday in Faisalabad on the joint call of all trade bodies to protest against the severe power and gas cuts. The angry protesters torched a Wapda office, blocked roads by burning tyres and raised slogans against government for creating energy crisis in the country. Police tried to break up the demonstration and fired tear gas and baton-charged the protesters who pelted police with stones. Police have registered cases against some 850 people on the charge of damaging public property. All main bazaars of the city remained closed. While, majority of petrol pumps also remained shut. AFP adds: Police in the industrial hub of Faisalabad launched tear gas shells and fired in the air Saturday to disperse hundreds of protesters angered by months of rolling blackouts, witnesses said. Angry mobs burned tyres in the streets and pelted police with stones during a day of protests across Faisalabad. More than 30 people were arrested. Many of the protesters were workers at local textile factories, which have suffered badly during the months of electricity load-shedding, or rolling blackouts, due to a nationwide power shortage. "The protesters attacked offices of the state electricity company and torched office records and furniture, prompting the police to fire tear gas shells and baton-charge the people," local police official Rommen Akram said. "We arrested at least 30 people on Saturday for trying to damage state property and promoting disorder," said another police official, Rana Mohammad Atif. The country has experienced severe electricity outages since early 2008, with an increasing number of blackouts in Islamabad and Karachi, which authorities have blamed on a lack of water for hydropower facilities. On Friday, President Asif Ali Zardari directed authorities to adopt short- and long-term measures to meet the power shortfall, and to put an end to load-shedding of natural gas.