Tamil Nadu Special Task Force (STF) and police are maintaining a strict vigil along the Tamil Nadu-Kerala border to prevent infiltration of seven Maoists, reportedly noticed by some villagers yesterday.

Following information on the movement of some strangers along the border near Attapady in Kerala, police from both the States are carrying out combing operations to flush out the possible infiltrated extremists, police said.

The tribals in the area claimed that they noticed seven persons, including two women, entering Attapady, a few kilometres from Tamil Nadu.

As there was the possibility of them entering Coimbatore, either via Mankarai or Mettupalayam, STF and Police are keeping strict vigil in the area, they said.

There were also reports that two of the seven members had undergone training in Jharkhand and they are targetting the youth and tribals, who were unhappy with the administration for not fulfilling their basic requirements.