The sister of a teenager who was killed in the 1994 sarin gassing in Matsumoto, Nagano Prefecture, was abducted Tuesday morning in Chiba Prefecture but freed uninjured 12 hours later in Nagoya, police said Wednesday.

The abduction victim, a 19-year-old college student, is the sister of Yuta Abe, who was among seven people killed in the gas attack allegedly perpetrated by Aum Shinrikyo, which also injured 144.

Police said the woman was apparently subdued with chloroform by a man immediately after leaving home in Narashino, Chiba Prefecture, at around 8 a.m., and taken to a car where she was blindfolded.