A Rancho Cucamonga homeless man already charged with soaking live cats in gas and torching them is now facing additional counts for allegedly using scissors to lop off feline tails.

Timothy Kooyman was ordered to trial last May on four felony animal cruelty charges. Last week, San Bernardino County prosecutors amended the charges to include using scissors as a deadly weapon.

Kooyman has pleaded not guilty by reason of insanity. If convicted, he faces up to seven years in prison.

Prosecutors say the 25-year-old Kooyman lured stray cats, then broke their legs and cut off their tails with scissors. Last May, Kooyman allegedly set a live cat ablaze and started a brush blaze.