Authorities in face shields and other protective gear have been searching for three monkeys that escaped from a truck that overturned on a Mississippi highway earlier in the week. Officials say animal experts from Tulane University examined the crashed truck and determined three monkeys had escaped after Tuesday's crash on Interstate 59 near Heidelberg, Mississippi. Those searching for the monkeys on Wednesday were scouring fields near the crash site Wednesday.  Video recorded after the crash showed monkeys crawling through tall grass beside the interstate. It remained unclear who owns the monkeys, who was transporting them and where they were being taken when the truck crashed.

Officials say monkeys escaped captivity when a truck carrying them overturned on a Mississippi highway. The Jasper County Sheriff's Department says all but one of the escaped monkeys were killed, warning they were “aggressive.” It's unclear how many monkeys were in the truck. Video shows monkeys crawling through tall grass on the side of Interstate 59 just north of Heidelberg, Mississippi. The truck was carrying Rhesus monkeys, which are commonly used in medical research. The sheriff’s department initially said the monkeys were carrying diseases. Tulane University in New Orleans, which had housed the monkeys, says they were not infectious.