The police in Meghalaya have set up at least seven checkpoints along the state’s border with Assam to identify and stop undocumented immigrants from entering the state, The Indian Express reported on Monday.

The state’s move came a week after the final draft of the National Register of Citizens was published in Assam. The register, meant to identify undocumented immigrants, left out more than 40 lakh applicants when it was published on July 30.

“These checkpoints are by the anti-infiltration department and we have set them up to check passengers coming in from Assam to detect any illegal foreigners,” Debangshu Sangma, the superintendent of police (infiltration) told The Indian Express. “People need to show any identification document that proves that he or she is an Indian citizen.”

The checkpoints have been set up on all border routes between the two states in the West Khasi Hills, Ri-Bhoi, Jaintia Hills and Garo Hills districts.

On Saturday, Assam Chief Minister Sarbananda Sonowal spoke to his Meghalaya counterpart Conrad Sangma and “requested him to take urgent measures for ensuring smooth movement of people and vehicles of Assam passing through Meghalaya”.

Sonowal, according to a government press release, informed Sangma that the “harassment caused to the people of Assam” has also been brought to the notice of Union Home Minister Rajnath Singh. “The Meghalaya Chief Minister while taking cognisance of seriousness of the matter assured Sonowal to take all necessary measures in this regard,” the statement added.

Last week, activists of the Khasi Students’ Union set up their own check-gates and questioned travellers from Assam about their identity.

The students’ union stopped the interrogations after meeting representatives of the state government. They are scheduled to meet Meghalaya Deputy Chief Minister Prestone Tynsong to request a National Register of Citizens for the state.