The price of RON97 petrol will go up by 20 sen to RM2.70 per litre effective midnight Friday night, according to the Petroleum Dealers Association of Malaysia (PDAM).PDAM deputy president Datuk Zulkifli Mokti said the increase was due to the rise in the price of crude oil to US$114 per drum this week from US$105."This is due to the crisis in the Middle East," he said when contacted by Bernama Friday night.Zulkifli said the price was likely to increase in the future due to the situation in the Middle East which he added could prolong.On Jan 31, the price of RON97, which was floated according to the prevailing oil market price, rose by 10 sen to RM2.50 per litre.RON95 petrol remains at RM1.90 per litre.-- BERNAMA