Bangladeshis stand with placards that read "I am sorry," during a human chain demanding the arrest of murderers of Japanese citizen Kunio Hoshi in Dhaka, Bangladesh, Saturday
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The tweets claiming the responsibility of killing two foreigners and the bloggers were uploaded from Bangladesh, said an official of Information and Communication Technology (ICT) ministry.
Tanveer Hasan Joha, focal point officer of an ICT division cyber security project, said they have found that one of the two posts regarding the foreigners' killing was uploaded from garment product manufacturing company's corporate office at Gulshan in the capital, Dhaka.
Italian aid worker Cesare Tavella was gunned down on September 28 in the high security Gulshan diplomatic zone area while Japanese national Kunio Hoshi was shot dead in Rangpur on September 3.
After Tavella's killings, SITE Intelligence Group, a US-based for-profit company that tracks online activity of white supremacist and jihadi organisations, tweeted an image in Arabic language saying international terrorist organisation Islamic State claimed the responsibility of the murder.
Meanwhile, news agency Reuters reported after Hoshi's killing that IS, claiming responsibility of the killing in Twitter message, warned of more attacks 'against nationals of crusader coalition countries' and that 'they will not have safety or a livelihood in Muslim lands'.
Talking to The Daily Star yesterday, Joha said they have already detected the Internet Service Provider (ISP) address of the corporate internet connection.
Detectives are now looking for the person who used the Internet Protocol (IP) address of the internet at that time.
Joha claimed the electronic evidence has proved that the persons who uploaded the posts were self-claimed Islamic State (IS) members. He also claimed they collected funds from Saudi Arabia several times but did not explain how.
"Different law enforcement agencies sent us letters to know the identities of many internet users. We just work on those demands,' he said.
Meanwhile, Home Minister Asaduzzaman Khan Kamal said, 'All tweets were uploaded from Bangladesh with motives.'
Asked whether the same group that killed the bloggers was behind the murders of the two foreigners, he said he did not know anything about this.
'I will brief media in details in three to four days,' he told The Daily Star.
Following the murders, Site Intelligence Group, a website monitoring terrorist activities, ran two stories claiming that two Arabic posts of IS claimed the responsibility of both the murders. (k)(++++)
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