A dog-walker’s poop-bag fastball landed a Johnston man in police custody.

Around 8:50 p.m., Aug. 6, Johnston Police Sgt. Arthur Petteruti responded to the area of 456 Greenville Avenue in reference to a dispute between a driver and a pedestrian.

A woman called police to report that she was crossing the street with her dog when they were almost struck “by a speeding motor vehicle.”

The dog-walker told police she “threw a bag of dog poop which hit the side of the motor vehicle; however, did not cause any damage,” according to the arrest report.

The driver allegedly exited his vehicle and had an argument with the dog-walker.

Police spoke to both parties. They identified the driver as Jorge D. Cruz, 27, of 49 Homestead Ave., Johnston.

“Mr. Cruz stated he was traveling southbound on Greenville Avenue in the area of Green Valley Drive, when a male and female walking a dog walked in front of his motor vehicle,” Petteruti wrote. “Mr. Cruz stated he pulled over to the side of the road and confronted (them) regarding the incident.”

Petteruti wrote in the report that he “detected a strong odor of an alcoholic beverage emanating” from Cruz’s breath. His speech was allegedly slurred, cheeks rosy and eyes bloodshot and watery.

Police asked Cruz to submit to a series of standardized field sobriety tests. He consented.

Following the tests, Cruz was placed under arrest for suspicion of operating a motor vehicle while under the influence of intoxicating liquor and/or drugs. He was transported to Johnston Police Headquarters, read his rights, and permitted to make a phone call (but he declined), according to police.

His vehicle was towed from the scene. Cruz allegedly refused to submit to a chemical breath test.

Cruz was charged with DUI of Liquor or Drugs (first offense, BAC unknown). He was also cited for Refusal to Submit to a Chemical Test.