New Delhi, July 24 -- An attacker yelling "Allahu Akbar" was arrested Thursday after police said he stabbed two men in separate, nonfatal attacks on Manhattan's Upper West Side.

Raul Morales, 51, allegedly stabbed an Asian man and a Jewish man and yelled the Arabic phrase "Allahu Akbar" during both attacks, witnesses told the police department.

Police Commissioner Jessica Tisch was quoted by the Associated Press as saying that the department was working to determine a motive.

There wasn't immediately any known link between Morales and the victims, and the initial investigation suggested that mental health may have been a factor in the attacks, Tisch said.

Morales remained in custody Thursday evening and it wasn't immediately clear whe...