Detroit (WWJ)  -- Detroit Mayor Kwame Kilpatrick may be in more hot water with the law as he could be facing an assault charge.

Kilpatrick allegedly assaulted an officer from the Wayne County Sheriff's Department, who was attempting to serve an administrative subpoena to Bobby Ferguson, a longtime friend of the Mayor.

According to Wayne County Sheriff Warren Evans, Kilpatrick exited the home and allegedly pushed an officer hard enough that he bumped into a female member of the Wayne County Prosecutor's office. To prevent an escalation of the incident, Evans says the officers left the home without serving the subpoena and returned to the department's downtown headquarters to fill out reports. Michigan State Police have been asked to conduct an investigation.

Evans says the mayor could face a charge of simple assault. No one was injured and no weapons were involved.

The mayor's attorney, Jim Thomas, says the person who was serving the subpoena did come looking for Bobby Ferguson, but it wasn't his home. It was the mayor's sister's house. Mayor Kilpatrick informed him of that and asked him to leave. When he did not leave, the mayor gently escorted him from the porch of the home.

WWJ Legal Analyst Charlie Langton calls these "very, very serious allegations against the mayor." Langton adds, "The mayor may have violated the conditions of his bond and in the most extreme cases, bond could be revoked and he could go to jail right now to await trial in the felony perjury case."

Mayor Kilpatrick will be in 36th District court Friday morning for a hearing in the text messaging scandal. A judge could rule more text messages can be made public.

Earlier in the week, Kilpatrick verbally attacked Wayne County Prosecutor Kym Worthy after she amended two criminal charges against him. He accused Worthy of having a "personal vendetta against him."

As for Bobby Ferguson, he's been under investigation for allegedly receiving inside information from the Mayor and his office that led to him winning city contracts worth at least 45 million dollars.