Trash skimmers, weed harvesters and dredge utility units were in action as the Yamuna cleaning work, which dominated the headlines in the run-up to Delhi polls, began on Sunday. The action follows a meeting between Delhi Lieutenant Governor VK Saxena and the Chief Secretary of the national capital, where an immediate directive was issued to clean the Yamuna river. According to a statement from the Lieutenant Governor's office, there is a "four-pronged strategy" to tackle the issue of pollution in the Yamuna.