SILVER SPRING, Md. (DC News Now) — Police said they arrested a man who stabbed a Metro custodian in the arm on Wednesday.

The incident occurred around 5:30 p.m. at the Silver Spring station, police said. The custodian was injured seriously and was taken to a nearby hospital, where he was reported to be in stable condition.

The Metro Transit Police Department along with the Montgomery County Police Department responded to the report. They later arrested Daniyom Tesfaye, 38, after finding him nearby. He is being charged with first degree assault.

The cause of the attack was not known and no rail services were impacted.