Sri Lankan immigration authorities have deport over 600 people for alleged visa violations since the Easter Sunday bombings. 

The figure includes those authorities say were working as Islamic preachers despite entering the country on a tourist visa. 

An Immigration Department official reportedly told the Sunday Times, "at least 200 foreigners were in involved in Islamic preaching in Sri Lanka". 

Their visas were issued on the recommendations of the Muslim Affairs Ministry, the official added.

Visas were issued by the Immigration Department following security clearance by the Ministry of Defence. 

The owner of a tea shop at the University of Jaffna was arrested by Sri Lankan security forces, accused of keeping a photograph of the medical student who fasted unto death, Thileepan. 

<p>The families of disappeared co-ordinator in Mullaitivu has slammed the Sri Lankan government for the scapegoating of former LTTE cadres over the murder of two police officers&nbsp;in Batticaloa last year, after recent revelations that the murders may have been linked to Islamist extremists who also carried out terror attacks on Easter Sunday.</p> <p>Co-ordinator Mariasuresh Easwari said the government must be held accountable for the injustice of the two former cadres’ detention which has been ongoing for over&nbsp;five months. The government must also answer for the suffering the families of the detained former cadres have experience, Easwari said.</p>

According to reports in a Lebanese website, Al Ahed News, Saudia Arabia alerted its envoy in Colombo about the Easter Sunday bombings five days before the attacks. 

Sri Lanka reiterated that it would not require emergency bail-out funding after the devastating Easter Sunday bombings, outlining tax amnesty plans to support the tourism industry. 

When asked by Bloomberg if Sri Lanka would need to tap into the emergency funds of the IMF and World Bank due to the terror attacks, Sri Lanka’s Finance Minister Mangala Samaraweera swiftly said,

Sri Lankan police have made an application to the Ministry of Defence requesting permission to detain and investigate the two students under the Prevention of Terrorism Act, sources at Koppay station told the Tamil Guardian. 

Sri Lanka's army commander, Mahesh Senanayake told the BBC "too much of freedom" had led to the Easter Sunday suicide bombings, which killed over 250 people. 

The Easter Sunday attack at the Zion Church in Batticaloa claimed another victim this week, after 27-year-old Parameswaran Presteen succumbed to his injuries on Thursday evening.

The Jaffna University science graduate was critically injured in the attack and was receiving treatment for his injuries at the Batticaloa Hospital, where he passed away. 

He had been waiting to hear back from a job application, before he was killed last Sunday.

Homes in Jaffna were searched by armed Sri Lankan soldiers, as security operations across the North-East continue.

Sri Lankan military and police carried out a search operation at the University of Jaffna during the early hours of the morning local time, arresting the president and the secretary of the Arts Union.