Rapid City police tracked down and arrested a 21-year-old man for threatening to shoot a convenience store clerk early Monday morning.
Police say Alexander Quintana of Rapid City entered a convenience store at 4128 Jackson Blvd. about 1:42 a.m. and threatened the clerk.
Officers found Quintana a short time later in one of the water channels in Canyon Lake Park.
Quintana is charged with aggravated assault, possession of a firearm while intoxicated and obstructing police.