Police on Monday arrested the man who was the alleged lover of the mother who killed her two children in Brahmanbaria and tried to blame it on Napa syrup. 

The arrestee was identified as Safiullah. 

He was arrested from the capital’s Abdullahpur area around 5pm, said Molla Mohammad Shahin, Additional Superintendent of Brahmanbaria police. 

Earlier on March 17, Lima Begum was arrested on allegations of killing her two children by feeding them sweetmeat laced with poison. 

On March 10, the two siblings -- Yasin Khan, 7, and Morsalin Khan, 5 -- allegedly died after consuming Napa syrup at their home as they were down with high fever.

The deaths of the two children shook the entire country and raised a question over the quality of Napa syrup.

Ismail Khan, the father of the two children, had lodged a complaint at the Ashuganj police station. Based on the complaint, an FIR was registered by police.

READ: Napa syrup row: Mother held for killing kids in B’baria

Two probe bodies were formed in this connection, while samples of the syrups of the same batch were collected for testing. But after testing, officials of the Directorate General of Drug Administration (DGDA) said the concerned batch of Napa syrup was found to be "safe".

Later, police in an investigation found that Lima had developed an illicit affair with Shafiullah while working at a local rice mill, and in order to get married they planned to kill her two children, claimed police.

Lima had admitted her guilt during police questioning.