The 12-member group is the third rotation of ESTPOL8 assisting the Latvian Border Guard with the migration crisis. It will carry out patrols of the border as well as drone and situation monitoring for the next two weeks.
PPA head Veiko Kommusaare said Estonia is contributing because Latvia asked for assistance.
"In the current difficult security situation, it is important to act as one with our neighbors and support each other," he said.
Nikita Golovin, head of ESTPOL8's third rotation, said the team will gain valuable experience about how to work with international partners and "curb mass immigration".
The PPA has been working on the Latvian-Belarusian border since September 20.
Latvia has been forced to deal with large numbers of attempted illegal border crossers as a result of the state-sponsored people-smuggling operation facilitated by the Lukashenko regime in Belarus.
