Police are asking for the public's help in finding a man they said has at least twice erupted in rage over being delayed by students boarding a special-needs school bus in the Greenfield Hill area.

The first report was received July 10 and this week police said they learned about a similar incident -- believed to involve the same man -- in June.

Police Sgt. Suzanne Lussier said the description of the subject and his car are the same.

In both incidents, the man, driving a newer black Mercedes, became upset over the time it was taking to buckle special-needs students into their seats on the school bus.

The June incident took place around 3 p.m. on Congress Street near Joan Drive. The mother of the student said the man got out of his car and physically blocked her path, and then later passed several cars in an attempt to catch up with her as she drove away.

On July 10, a woman said she was buckling her 5-year-old into the car seat on Redding Road near Merwins Lane when the man confronted both her and the bus driver about how long it was taking. During the confrontation, he left his Mercedes in the middle of the road, straddling the yellow double traffic stripe.

The man is described as well dressed and in his late-60s. Police believe he either lives in the area or possibly nearby in Wesport, Weston or Easton.

"We would like to identify him," Lussier said. "We think that this guy's actions warrant us identifying him and taking appropriate action."

She said there is "absolutely no way" he would not have known the bus was carrying special-needs students. "It's incomprehensible that someone could display this type of anger over a child getting on a school bus," she said.

Anyone who might have information is asked to contact police at 203-254-4800. Tips will be kept confidential.