Police on Saturday arrested a trader for allegedly overcharging customers for liquefied petroleum (cooking) gas. Madan Thapa Magar (30), a resident near Police Checkpost in Thankot of Kathmandu, was arrested by a team deployed from the Metropolitan Police Circle, Thankot. Magar is accused of selling a gas cylinder for Rs 5,000, of which the market price was Rs 3,800 only. Police also confiscated eight gas cylinders from him. Similarly, police arrested Bharat Bahadur Malla, 42, proprietor of Malla Grocery at Changunarayan, Bhaktapur, for not supplying cooking gas to customers and hoarding essential goods on September 30. Eight filled LPG cylinders were confiscated from his grocery store. Officials said all those arrested have been charged with offenses under the Black Marketing Act, 1975.