Watch: Defendant attacks judge in courtroom, knocks her over

A judge in the US state of Nevada was attacked on Wednesday by a defendant in a felony battery case who leaped over a defence table and the judge's bench, landing atop her and sparking a bloody brawl involving court officials and attorneys, officials and witnesses said.

In a violent scene captured by courtroom video, Clark County District Judge Mary Kay Holthus fell back from her seat against a wall and suffered some injuries but was not hospitalised, courthouse officials said.

A courtroom marshal was also injured as he came to the judge’s aid and was hospitalised for treatment of a bleeding gash on his forehead and a dislocated shoulder, according to the officials and witnesses.

The attack occurred about 11am at the Regional Justice Center in Las Vegas.

The defendant, Deobra Delone Redden, 30, was wrestled to the floor behind the judge's bench by several court and jail officers and courtroom staff members — including some who are seen throwing punches.

Watch the video here:

He was arrested and jailed at the Clark County Detention Center, where records showed he faces multiple new felony charges including battery on a protected person — referring to the judge and court officers.

“It happened so fast it was hard to know what to do,” said Richard Scow, the chief county district attorney who prosecuted Redden on a case that stemmed from an arrest last year on allegations that Redden attacked a person with a baseball bat.

Redden’s defenCe attorney, Caesar Almase, did not respond to later telephone and email messages seeking comment.