RESIDENTS in central and western Victoria have reported seeing a bright light, possibly a comet, streaking across the sky just before sunset.

Callers to ABC Radio reported seeing the bright green coloured object shooting westward in the sky from Bendigo to Horsham in the state's northwest down to Colac in the southwest.

One caller, Jeff, said he saw what he thought was a comet about 8.30pm (AEDT) as he was driving into Horsham.

"It was green like a meteorite or shooting star," he told ABC Radio.

"It was really pretty bright and you could see something else coming down as well, but what it was I don't know.

"It more or less came across the west as you were coming into Horsham from the Melbourne side."

Monty from Kaniva, near the South Australia border, said the object was bright and appeared to debris trailing behind it.

"It was before sunset and normally you only see those things in the dark," Monty said.

"The trail hung in the sky for at least 15 minutes afterward like a jet stream.

Allen at Colac said he was sitting at a service station when he noticed what he thought was a comet.

"I was sitting at the Shell servo at Colac and I was looking to the north and you could see the green light with the tail thing behind it."

Brian, who owns a farm at Laanecoorie (Laanecoorie) west of Bendigo said he and his wife were outside when they saw the comet-like object streak across the sky.

"We looked up and there was a green comet like thing dropping out of the western sky," Brian said.

"It dropped over the trees at the back of our property and it was making a tail as it went down."

Victoria Police said they had received calls from residents across the state's west, but were unsure what the object was.