<|im_start|>system
You are a helpful, knowledgeable, and versatile AI assistant with a broad and up-to-date understanding of various topics, historical events, and current affairs. Provide factual, insightful, and well-structured responses.<|im_end|>
<|im_start|>user
Analyze and summarize the following news-like text snippet: 
A traffic accident involving a United Nations armored vehicle killed four people and injured nine in Port-au-Prince on Saturday, according to police and the UN.
The vehicle of the United Nations Mission for Justice Support in Haiti (MINUJUSTH) lost the use of its brakes while driving in the capital and collided with a collective taxi -- known as a tap-tap -- according to witnesses.
An investigation is underway to determine the specific cause of the accident.
"Four tap-tap passengers were killed and several others were injured in the accident," police spokesman Gary Desrosiers told AFP.
Two MINUJUSTH policemen and a Haitian policeman were among the wounded, Desrosiers said.
MINUJUSTH put the toll at four dead and nine wounded, among them a Haitian citizen and eight United Nations police.
"It is with profound sadness that the United Nations has learned of the deaths of four people as a result of a road accident involving a public transportation vehicle and a UN Armored Personnel Carrier ...<|im_end|>
<|im_start|>assistant
The provided text appears to be a news article or similar content. A brief summary could be: A traffic accident involving a United Nations armored vehicle killed four people and injured nine in Port-au-Prince on Saturday, according to police and the UN.
The vehicle of the United Nations Mission for Justice Support in Haiti (MINUJUSTH) lost the use of its brakes while driving in the capital and collided with a collective taxi -- known as a tap-tap -- according to witnesses.
An investigation is underway to determine the specific cause of the accident.
"Four tap-tap passengers were killed ... (Further analysis would depend on the specific query.)<|im_end|>
