The Delhi police arrested 44 people including the man who attacked SHO Alipur in the violence that broke out on Friday afternoon at Singhu border.Criminal case under various sections including attempt to murder has been registered in Alipur police station, Delhi and investigation has been initiated."Accused Ranjeet Singh, a resident of village Kazampur, Distt Naya Shehar, PS Rahu, Punjab, age 22 years who attacked SHO Alipur with sword has been arrested from the spot," a senior police officer said.Situation at Delhi's Haryana border at Singhu deteriorated on Friday afternoon as villagers clashed with protesting farmers after one thing led to another and the mob was seen armed with stones, lathis, swords. A police officer among others was injured.Group of men, who claimed to be from nearby villages and wanted to get the over two-month old road blockage cleared came to blows with the farmers after heated arguments and then locals damaged tents, leading to stone pelting from both sides. The situation was controlled an hour later.