A total of 136 stores across Hawaii have been cited since September for selling tobacco to underage youth.

The state Health Department says that amounts to a 13 percent violation rate out of the 1,028 stores visited during the sting.

Oahu had the highest violation rate at 14 percent. Kauai had the lowest at 9 percent.

Fines for selling tobacco to anyone under 18 are $500 for the first offense and up to $2,000 for subsequent offenses.