HAYWARD -- A man who police say vowed to kill his neighbor apparently tried to make good on that promise Tuesday by trying to run him over with a car, police said.

Police arrested 39-year-old Ruperto Villanueva on suspicion of attempted murder after he first tried to run over the man, then tried to ram the car of someone who picked up the neighbor after seeing what was happening, Hayward police Sgt. Eric Krimm said.

The attack happened about 2:33 p.m. in the 2000 block of Florida Avenue after Villanueva tried to start a fight with the neighbor, Krimm said. The two have had a long-running feud, Krimm said, one that led to Villanueva's arrest April 6 on suspicion of making a criminal threat.

"He threatened to kill the same neighbor," Krimm said. "He was out on bail from that arrest when this incident occurred."

The neighbor refused to engage in a fight with Villanueva, who then responded by chasing the neighbor down Florida Avenue in a car. As the neighbor ran, another person in a car saw what was happening and opened his own vehicle to the neighbor, Krimm said.

Villanueva continued the pursuit and rammed the good Samaritan's car before escaping the scene and returning to his own home on Florida Avenue, Krimm said. Police found Villanueva there and arrested him without incident, Krimm said.

Villanueva was taken to Santa Rita Jail where he was being held without bail.

Contact Rick Hurd at 925-945-4789 and follow him at Twitter.com/3rdERH.