Melbourne recycling plant fire controlled

A huge blaze at a recycling plant in Melbourne's north has been brought under control.

It took more than 70 firefighters three hours to control the fire in a large shed containing bales of recycled material at SKM Recycling in Coolaroo, finally succeeding at 10.30pm on Saturday.

It's the second fire at the Maffra Street premises in a year. There are no reports of any injuries and the cause of the fire is unknown. Fire investigators will visit the site in the morning.