A 30-year-old Waianae woman was speeding and under the influence of alcohol when she struck and killed a pedestrian with her sport utility vehicle last October in Nanakuli, Vickie Kapp, deputy city prosecutor, said Wednesday.

An Oahu grand jury returned an indictment Wednesday charging Marcel Mercado with first-degree negligent homicide.

Kapp said Mercado was driving on Farrington Highway Oct. 9 when her SUV drifted onto the sidewalk and struck 40-year-old Byron Ching. The impact threw Ching 60 feet, she said.

Mercado’s SUV continued down the sidewalk, hit a utility pole and chain-link fence and came to a stop outside a house.

Mercado has a 2002 speeding conviction for driving 59 mph in a 30 mph zone and a 2006 conviction for driving 66 mph in a 30 mph zone, Kapp said.