The violent confrontation took place at about 10:10 a.m. when the girlfriend, a 25-year-old Westbury woman, whose name was withheld by police, agreed to meet with Ruben Estrada, 46, in the parking lot of the shopping center.
But when she got in the car, Estrada allegedly began punching her and stabbing her. The victim suffered 13 knife wounds, police said.
Several people ran to her aid, including Romann Martin, 26, a former Navy reservist from Farmingdale.
Martin said that the woman appeared to have been stabbed on the right side and the left breast.
Another man who came to the scene, a Massapequa resident who would only identify himself as, Eric, said he saw Estrada try to stab himself.
"At one point, you could see the knife sticking out of his chest," he said. Eric said he ran to the Honda after hearing somebody say, "A man is attacking his daughter."
Police said Estrada stabbed himself in the chest four times.
They were able to get her to safety and police quickly arrived at the scene, he said.
The girlfriend was airlifted to Nassau University Medical Center, where she was listed in critical but stable condition, while Estrada was taken to the hospital by ambulance, where he was also critical but stable.
He was charged with attempted 2nd degree murder, first degree assault, unlawful imprisonment, and weapons possession. He will be arraigned at the hospital at a later date.
Unqua Elementary School and Berner Middle School briefly initiated lock-out procedures because of the incident, school officials said.
A Huntington Station man was accused Tuesday night of selling drugs in the Massapequa area.
The Nassau County narcotics/vice squad said Bentley Sanon, 29, of 55 10th Ave., was charged with criminal sale of a controlled substance.
According to detectives, Sanon sold an undisclosed amount of heroin to undercover detectives on three separate occasions between July 2011 and March 2012 in the Massapequa area.
He was arrested without incident.
Sanon is charged with three counts of third-degree criminal sale of a controlled substance and third-degree criminal possession of a controlled substance. He will be arraigned on Wednesday at First District Court in Hempstead.
A 63-year-old Bellmore man was arrested and charged with possession of child porn after federal agents raided his house last week. Alfonso Marino, a former New York City substitute teacher, was arrested by agents of the Department of Homeland Security.
Three women from Flushing, Queens have been arrested by the Suffolk County Police Department for conducting illegal activities at a West Babylon massage parlor this afternoon. Xiu-Fang Ye, 40, Liying Han, 24, and Lina Yang, 31, all from Flushing, were arrested by Suffolk County Police at 2:35 p.m at Green Health Spa at 140 Route 109 in West Babylon. The arrests came following an undercover investigation at the spa by the First Precinct's Crime Section.
Vandals destroyed sports equipment at Commack High School last week, and police are looking for anyone who might have information. Suffolk County police report that a 911 was received from Pat Friel, Commack's athletic director, at approximately 1:30 p.m. Sept. 14. Friel said two soccer nets had been cut up overnight while the equipment was left on the fields.
Baiting Hollow artist Max Moran has good news to report in his odyssey to recover hundreds of works stolen from his Mattituck studio years ago -- 10 more works of art have been found. Moran reports that on September 10, ten works were recovered by law enforcement in Ohio. Two of the paintings found were those listed Southold Police Department and FBI reports. The paintings, Moran said, were turned over to his attorney in Columbus by law enforcement. "The FBI emailed their congratulations," Moran said.