Complex sentence: Two Chinese men were arrested for shooting at each other, and were released on bail, but the police kept watch on the Chinatown neighborhood that had developed along Calle de los Negros (street of Negroes), dating from the colonial period.
Split into simpler sentences: Two Chinese men were arrested for shooting at each other, and were released on bail, but the police kept watch on the Chinatown neighborhood. It had developed along Calle de los Negros (known as Negro Alley), which was named in the colonial period.