Gunmen have killed 13 people at a high school student party in the Mexican city of Ciudad Juarez.

墨西哥城市华雷斯发生枪击事件，持枪歹徒在一个高中生聚会上杀死13人。

The victims' ages reportedly ranged from 15 to 20

Two adults and 11 teenagers died, while about two dozen others were injured, as the attackers fired indiscriminately不加选择地，任意地 on partygoers社交聚会常客, according to reports.

It was not immediately clear if anyone at the party was linked to the drug gangs that have made Ciudad Juarez one of the world's most dangerous cities.

At least 15 other people died in the city, on the US border, at the weekend.

Witnesses said the gunmen drove up to the house in several cars late on Saturday or in the early hours of Sunday.

Scattered¹ bodies

They began shooting at people from outside the property before moving inside, and pursued追击，追踪 some of the youngsters trying to escape over a fence.

The bodies of the victims - whose ages reportedly ranged from 15 to 20 - lay scattered分散的，散乱的 around the house.

Unnamed police officials told AP news agency that witnesses had counted at least 15 attackers.

"The men drove up in four SUVs越野车, they were well-armed. They went into the house and shot at everyone, you could hear the gunfire all around," said a neighbour at the scene, quoted by Reuters news agency.

Ciudad Juarez, straddling跨坐，叉开 a highly lucrative有利可图的，赚钱的 drug-smuggling route into the US, is the scene of a vicious堕落的，恶毒的 ongoing³ turf war地盘争夺战 between rival cartels.

Some 45,000 troops and extra police have been deployed⁴ to crack down on the gangs in the city, across the border from El Paso, Texas.

But the campaign has done little to curb⁵ the bloodletting流血 - more than 7,000 people reportedly died in Mexican drug-related violence last year.

Beheadings, attacks on police, and shootings in clubs and restaurants are a daily occurrence in some regions.

In two of the worst attacks in 2009, gunmen stormed drug rehabilitation⁶康复，复原 clinics in September, killing⁷ nearly 30 people.