CIUDAD JUAREZ, Mexico, Oct. 24 (UPI) -- Police Sunday sought a motive and suspects in the deaths of 13 people attending a birthday party in the Mexican border city of Ciudad Juarez.
The attack that left 15 others wounded happened late Friday at a house in a working class neighborhood in Chihuahua state, across the border from El Paso, Texas, The Dallas Morning News said.
Some of the wounded are in critical condition with head injuries, the report said.
Witnesses told police the attackers arrived in three cars and appeared to be teenagers.
More than 100 bullet casings were recovered after the shooting spree, police said.
State Attorney General Carlos Salas told a news conference no motive was immediately known and the attackers escaped, the Washington Post reported.
In January, gunmen killed 15 people at a birthday party attended by teenage athletes in the same part of the city, the reports said.
The Morning News said an ongoing turf war between two drug cartels is considered the cause of nearly 2,600 homicides in the city so far this year.