Remain at large
"At large" implies that a person, typically a criminal, is free and not in custody, meaning police haven't yet caught or apprehended them. It's a term often used in news reports about ongoing criminal investigations.
The phrase is most commonly used when referring to criminals who have escaped from custody or have yet to be arrested. It signifies that the person is not confined and is still roaming freely, potentially posing a threat,while "on the loose" can be used with similar meaning, "at large" is more formal and often used in news reports.
Examples: The escaped prisoner remains at large. The criminal has been at large for weeks. The committee discussed the issue at large.
Police later arrested five people in connection with the shooting, though the suspected gunman – a French national of Tunisian origin with several previous convictions in France – remains at large.
FYI, "At large"@ a different context
At large (before a noun: at-large) is a description for members of a governing body who are elected or appointed to represent a whole membership or population (notably a city, county, state, province, nation, club or association), rather than a subset.
You use at large to indicate that you are talking in a general way about most of the people mentioned. The chances of getting reforms accepted by the community at large remain remote. Amongst the population at large the support for the present regime is virtually zero.
Example:
An at-large team and the highest rate Group of Five team would get in as well.
She is an editor-at-large for a popular fashion magazine.
The leadership council includes three at-large members.
