They are Golam Mostafa, Kobad and Alam.

Shahzadpur police said that acting on a tip-off, they arrested Golam Mostafa, an alleged member of Purba Banglar Communist Party from Beradanga village in Kayempur union in the upazila in a raid in the area in the early hours of yesterday. Police recovered a Suttergun and two bullets from his possession.

The arrestee hails from Dhulauri village in Shathia upazila in Pabna district, Shahjadpur thana OC Khalilur Rahman said.

Police sources claimed that Golam Mostafa could have been involved in Wednesday's attack on Bamihal police outpost. He took shelter in Beradanga village to evade arrest, they claimed.

After arrest, Golam Mostafa told police that some more police outposts are in the hit list of outlaws. Arms and ammunition looting is the their main target, the arrestee told police.

In a separate incident, alleged outlaws Koban and Alam were arrested from Balshabari in Ullapara uapazila yesterday evening.

Police sources said arrest of three outlaws in the district in a day has created alarm among law enforcers and all police stations and outposts have been alerted.

Meanwhile, police have launched a manhunt in Sirajganj for those involved in Wednesday's incident in which three Ansars were killed.