PARKCHESTER, the Bronx (PIX11) — A teenager was slashed during an unprovoked attack while on a train in the Bronx Thursday, police said.

The 19-year-old victim was aboard a northbound No. 6 train near the Parkchester subway station when a man slashed her in an unprovoked attack at around 12:15 p.m., according to authorities. The attacker slashed her in her chin and left arm before taking her cellphone and necklace. She was taken to a hospital, where she was listed to be in stable condition.

The suspect, who ran off, was last seen wearing an all-black outfit, officials said. An investigation is ongoing, as no arrests have been made.

Submit tips to police by calling Crime Stoppers at 1-800-577-TIPS (8477), visiting crimestoppers.nypdonline.org, downloading the NYPD Crime Stoppers mobile app, or texting 274637 (CRIMES) then entering TIP577. Spanish-speaking callers are asked to dial 1-888-57-PISTA (74782).