Police on Sunday claimed to have cracked the case related to e-mail threats to the president and prime minister with the arrest of a man named Akbar Raj, who allegedly sent the messages from a cyber cafe in Kochi.
The investigation showed the "prima facie" motive behind the crime was to cause trouble for a girl whom Raj had known through chatting on the internet, Director General of Police Raman Srivastava and DIG Padmakumar told reporters.
However, further inquiries will be made to ascertain whether Raj had any links with any organisation, they said.
The man had sent the threatening e-mails that had a link pointing to the girl, a resident of Kottayam.
Raj (26), a computer instructor and hardware expert, used to harass the girl by sending "malicious e-mails". Police were able to trace the girl's address by decoding the link in the e-mails sent by Raj to several top officials on October 26.
The resident of Cherthala in Alappuzha district was picked up late last night.
Investigations revealed that the girl had earlier complained that Raj had sought to create trouble for her.
According to police officials, Raj has confessed to having sent the e-mails and the staff of the internet cafe from where the messages were sent had identified him.
The e-mails prompted police to take a serious note of the matter as Prime Minister Manmohan Singh is scheduled to visit Keral on November one for events to mark the state's formation day.
Srivastava said Raj's background revealed that he had a habit of creating e-mail IDs in the name of different persons and sending messages to creat trouble.
It was by tracking a code found in the messages sent by him that police traced the address of the girl to a village in Kottayam district. It was from her that police learnt about Raj.
The girl had nothing to do with the incident and it was with the malicious intention of causing trouble for her that these e-mails were sent, he said.
Giving a detailed account of the case, Padmakumar said Raj came to the cyber cafe around 2.30 pm and remained for about an hour in one of its four cabins.
He said there was no doubt that Raj was behind the crime and police had sufficient supporting evidence.
"We were keen to solve the case before the arrival of the Prime Minister. Otherwise, it would have remained as a security issue," Padmakumar said.
Considering the hi-tech nature of the case, Microsoft's help was sought as the issue had certain security implications, he said.
"There is no threat to the Prime Minister's security during his visit to the state and adequate arrangements have been made," he said.
Police in Kochi said Raj would be produced before Judicial Magistrate Sarat Chandran at his residence at Kadavanthara, after 5 pm.