'Extremely intelligent' bear on the run in Japan after injuring four people

Japanese authorities have been trying to catch a bear in north-east Japan after it injured four people and evaded capture seemingly by opening a window by itself.

Footage released previously shows the bear chasing and attacking a man outside a building in Fukushima.

The bear was then holed up inside an electronics factory but escaped in the night, authorities said.

The bear's trail suggests it released the window latch and pushed it open, according to city officials.

Before Wednesday's escape, the bear was reportedly seen turning on a water tap with its paws.

"We believe it to be extremely intelligent," Fukushima Mayor Yuki Baba said, according to Kyodo news agency.