The assailants were said to have stormed the property while supporters of the Senator were having a meeting.
However, no casualty was recorded in the course of the attack which took place on Saturday December 3.
''Police officers have already cordoned the office area,'' Suleiman Sule, the senator's aide told Premium Times.
Residents of the area said the attackers came in large numbers.
''They were all with dangerous weapons and all headed across the road where Shehu Sani's office was. They dispersed some people who were holding meeting in the office,'' one resident said. ''Thank God it is a busy area and there is always the presence of police officers. Before it could get out of hand they thugs ran away.''
A police spokesperson who identified himself as Abba Danjuma, an Inspector, confirmed the incident, but called for clam.
''The Kaduna police are on top of the situation as our officers have arrived the scene and investigation has begun. There was also no report of casualty at the moment,'' the police said.