MILWAUKEE (CBS 58) -- The Milwaukee Police are currently investigating an aggravated battery that happened on Tuesday morning.

It happened shortly before 10 a.m. on a Milwaukee County Transit Bus near 16th and Wisconsin.

Police say the suspect struck the 75-year-old victim in the face several times with his fist, causing injury.

The suspect is described as a black male, 30-40 years of age, medium to dark complexion, goatee, 6'0 to 6'2, and weighing 220 to 240 pounds. The suspect was last seen wearing a black winter cap, gray hooded sweatshirt, black pants, tan work boots, and black gloves.

Anyone with information is asked to call Milwaukee Police at 414-935-7360.