Libyan medical sources say clashes between two powerful armed factions in Tripoli have killed 27 people and wounded more than 100 others.
Violence broke out late on Monday after the Special Deterrence Force (SDF) seized a commander of the 444 Brigade.
It subsided after the commander was released on Tuesday evening.
The fighting shattered months of relative calm in Tripoli.
A 2020 ceasefire has brought a measure of peace to Libya, but entrenched factionalism constantly threatens to upset it.
BBC/Adebukola Aluko
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