BOSTON – Longtime Boston Red Sox broadcaster Jerry Remy said Saturday he could not describe his “disgust and remorse” over allegations his son fatally stabbed his girlfriend a day after being released from custody for allegedly assaulting her.

In a statement released through his Twitter account, Remy said he and his wife are “heartbroken” over the death of Jennifer Martel on Thursday night, allegedly at the hands of his son, Jared.

“Words cannot describe my wife’s and my grief,” Remy wrote. “Son or not, I am at a loss for words articulating my disgust and remorse over this senseless and tragic act.”

Jared Remy, 34, pleaded not guilty in Waltham District Court on Friday on charges of murder and domestic assault and battery in the killing of Martel, 27.

In court, prosecutors described a brutal and determined attack, saying Jared Remy assaulted Martel in the kitchen, living room, on a stairway and then pinned her to the ground in the patio where he stabbed her several times. At least one neighbor who tried to help Martel was driven back when Remy slashed at him, a prosecutor told a judge in court.

Martel’s 4-year-old child was in the apartment but was not hurt. The child is now in the custody of child welfare officials.

Jared Remy was arrested at the scene, his clothes soaked in the victim’s blood.

He has a violent criminal history, including a total of 15 criminal charges since 1998, according to Waltham court records.

CUBS: Shortstop Starlin Castro was pulled from a game against St. Louis shortly after making a mental mistake that let the Cardinals score a run.

The Cardinals led 1-0 in the top of the fifth inning and had the bases loaded with one out when Castro caught a popup by Matt Carpenter in short left field. Castro put his head down and hesitated to throw home, looking as if he thought the inning was over. Jon Jay scored from third base and the other runners advanced.

BLUE JAYS: Shortstop Jose Reyes is expected to be sidelined for a few days because of soreness in his right knee.

RAYS: Tampa Bay put designated hitter Luke Scott on the 15-day disabled list because of lower back spasms and reinstated reliever Brandon Gomes from the 60-day disabled list. Gomes missed 88 games because of a right lat strain.

RANGERS: Right-hander Alexi Ogando got an injection to treat inflammation around a nerve in his right shoulder and will miss his scheduled start Monday against Houston.

ROCKIES: Colorado activated closer Rafael Betancourt from the 15-day disabled list. Betancourt was put on the DL on July 20 because of appendicitis.

METS: New York promoted catcher Travis d’Arnaud from Triple-A Buffalo and put him into the starting lineup for his major league debut.

D’Arnaud, 24, was the key player the Mets received from Toronto in the offseason trade for NL Cy Young winner R.A. Dickey. He has played in only 19 minor-league games this season because of a broken foot.

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