Two women and two girls were killed late Tuesday when a shell landed on a beach near Mitiga airport in the Libyan capital, Tripoli, officials said.

The shell also injured 15 people, hospital official Mohamed Ben Khalil told Libya’s Al-Ahrar channel.

"The casualties are the result of clashes on Tuesday between a security force and outlaws who fired a shell that fell on a beach in front of Mitiga airport," Abdulsalam Ashour, a deputy interior minister in Libya's UN-backed government, told Al-Ahrar.

Other reports said the shell was fired during a revenge attack against one of Libya’s many armed factions which are fighting for control in the fractured country.