The employee, a labor supervisor, got into a quarrel and beat up a van driver who works as a contract laborer for the company. This occurred 1 km away from the company premises as the van driver was returning from dropping off laborers. The van driver has worked for the company for over a year and has support from other employees. The labor supervisor also plays a major role in providing contract labor to the factory and is from the local area. The HR manager needs advice on how to handle this grievance situation.