used US security tear gas on the borders of Mexico to prevent groups of immigrants from sneaking strongly to land the United States , according to " Associated Press ". 

About 150 migrants tried to breach the barrier along the US-Mexico border near Tijuana, where the US authorities used at least three times to use tear gas to thwart their attempt, the agency said.

Women, children and journalists were among those affected by gas inhalation, the agency said. 

Migrants told the agency they arrived at the border last month as part of a convoy from Honduras . 

The US Customs and Border Patrol Authority said the gas was used against stone throwers who were obstructing staff in their efforts to help stranded children, adding that 25 migrants had been detained. 

Since October 2018, large convoys of immigrants from Central American countries have traveled to the American border through the territory