The border guards also include a K9 unit and criminal intelligence experts.
The Lithuanian team will work on the Latvia-Belarus border for at least two weeks.
Last week, it was reported that Lithuania was considering a request from Latvia to send a team of ten to 15 border guards to help fight illegal immigration from Belarus.
Lithuania also sent 20 border guards to Latvia in autumn 2023 to help with border surveillance, prevention of illegal migration and other operations on the border with Belarus.
Latvia has recently observed an increasing pressure of illegal migration from Belarus.
This year, Lithuanian border guards have prevented more than 370 illegal migrants attempting to cross the border from Belarus, Latvia has prevented around 3,500 such attempts, while in Poland the number exceeds 21,000.