Thailand’s Prime Minister Paetongtarn Shinawatra has announced heightened measures to crack down on cybercrime that target neighboring Cambodia.

Thailand began imposing land border restrictions Monday including blocking tourists heading into Cambodia as the two countries engage in retaliation in their border dispute.

The Thai army said it had implemented restrictive measures at every land border checkpoint between Thailand and Cambodia in five provinces, and that it was stopping all crossings except for people with essential needs.