A Bronx man facing attempted murder charges after he stabbed two girls at Grand Central Terminal on Christmas Day slashed a fellow Rikers Island detainee in the head and face on Thursday, seriously injuring him, according to Correction Department officials.

It was not clear how the man, Steven Hutcherson, had obtained the 1.5-inch ceramic blade he used in the attack on the inmate: whether ineffective searching had allowed him to sneak it into the jail, or if he had acquired it inside.

The detainee who was attacked had four slashes to his face and received about 200 stitches, according to people who spoke on the condition of anonymity because they were not authorized to speak with the media.

Mr. Hutcherson, 36, was in a jail dorm at the Eric M. Taylor Center on Rikers Island when, around 8 a.m. on Thursday, he attacked the other detainee, officials said.