Three people were arrested in two rape cases in Magura and Jashore on Monday night.
In Magura, Rab held two people on charges of gang-raping a 42-year-old woman, a mother of three, on Monday night.
However, the Rab officials did not disclose the arrestees' identities for the sake of investigation.
The victim's family members said they are inhabitants of a village in Jhenidah's Shailakupa. The village is situated in a bordering area of Jhenidah and Magura.
The victim along with her husband used to stay in a makeshift tent near a paddy field at night in Jagla village of Magura Sadar upazila to carry the harvested paddy to its owner's house on their horse cart.
During the paddy cultivation season every year, they normally do this work and get paddy or money for it.
Around 1:00am on Sunday, five unidentified criminals attacked them with sharp weapons.
The criminals tied the victim's husband to a tree and gang-raped the woman at knifepoint. They also looted Tk 5,000 before leaving the scene.
Hearing their screams, locals later rushed there and rescued the couple.
The victim later filed a case against five unknown criminals with Magura Sadar Police Station, said Joynul Abedin, officer-in-charge of the station.
On Monday night, Rab arrested two people from Baittapara Bazar in Magura Sadar upazila over their alleged involvement in the incident. They were being interrogated, said Lt Col Sarwar Hossain, company commander of Rab-6 in Jashore.
In another incident, police picked up a man from Jashore's Keshabpur on Monday night over the rape of a housewife .
The arrestee is Abu Sayed, 33, of Bhaina village of the same upazila.
Police said both the victim and the accused are neighbours. On Sunday night, Sayed asked the 35-year-old victim to go with him to bring medicine from a village doctor.
He then took the woman to nearby Dangir Beel and raped her with the help of some of his associates.
The victim lodged a case with Keshabpur Police Station accusing Sayed and three others.
The other accused -- Sirajul Islam, 33, Jasim Uddin, 32, and Siddiqur Rahman, 30, -- are residents of other villages in the same upazila.
Police were conducting drives to arrest the other accused, said Jasim Uddin, OC of Keshabpur Police Station.
[Our correspondents in Jhenidah and Benapole contributed to this report.]