During the telephonic conversation, Khattar briefed the Home Minister about the steps being taken to arrest Rampal and how to avoid casualties.
Sources said Singh told the Chief Minister to do the needful to resolve the issue as early as possible and assured all central assistance in its endeavour.
Sources said the Home Ministry was said to be unhappy with the face-off between Rampal's supporters and police continuing and wanted a quick end to it.
Meanwhile, Minister of State for Home Kiren Rijiju said the situation in Hisar was fully under control and state and central governments were continuously monitoring it.
"The state government is acting on the direction of the court. The Home Ministry cannot interfere. I think the state government is handling the situation effectively. No breakdown of law and order as the incident has happened only at a particular place. There is no problem in rest of the state," he said.