Hartford, Conn. (WHDH) – A 20-year-old Springfield mother and her 4-month-old son were killed in a shooting in Hartford, Conn., on Tuesday, police said.

Police have issued an arrest warrant for 23-year-old Lance Morales, also known as “Macho,” in connection with the case.

Morales lives in Waterbury, Conn., and was driving with a Massachusetts license plate at the time of the shooting, according to Hartford police.

“Do not approach this individual. He must be considered armed and dangerous. You need to contact 911 if you see this person,” Hartford Acting Police Chief Kenny Howell said. “Lance, you have no choice but to turn yourself into the Hartford Police Department.”

Police are not yet sure how many people were involved in the shooting.

Hartford police said Morales was last seen in a white Infinity Q70 with license plate 3NE B35.

Police believe the Massachusetts plate is being misused and said Morales has access to several vehicles.

This is a developing story; stay with 7NEWS live and online for the latest details.

(Copyright (c) 2024 Sunbeam Television. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)