CHICAGO (CBS) — Police say a pair of girls only 16 years old are on a mission to grab jewelry from unsuspecting victims on the city’s Southwest Side.

A community alert has been issued for the robberies, the first of which happened around 3:20 p.m. May 27 in the 5800 block of South Troy Street. A 15-year-old girl was approached by the two suspects, who grabbed her necklace from her, police said.

In the second robbery, which happened in the 5500 block of South Mozart Street, a 15-year-old girl was robbed of a gold chain and a gold heart ring, police said.

Neither victim was injured in the robberies.

The suspects are described as two Hispanic girls, both 16 years old. One is between 4 feet 8 to 5 feet 2 inches tall and between 100 to 115 pounds. The other is between 5 feet 3 to 5 feet 6 inches tall and 115 to 150 pounds.

Anyone with information on the robberies or the suspects is asked to call Wentworth Area police detectives, at (312) 747-8382.

The Sun-Times Media Wire contributed to this report.