More than a month has passed since a monkey was spotted in the posh Nishi Azabu district of Tokyo's Minato Ward, and with residents leaving it scraps of food, the area has become the primate's second home.

However, some animal experts say the monkey may suffer from malnutrition if it stays in the metropolis.

The first spotting of the monkey came June 16, when Nishi Azabu residents saw it perched atop a concrete fence.