At least 600 people including Hefazat-e-Islam leader Mamunul Haque were sued in three cases filed over an attack on police and vandalism at Royal Resort in Narayanaganj's Sonargaon on April 3.

Narayanganj Superintendent of Police Md Zayedul Alam said the law enforcement filed two cases and a journalist filed the other.

Also read: Hefazat's Mamunul detained with woman from resort

On April 3, supporters of Hefazat Joint Secretary General Mamunul went on a rampage in Narayanganj and vandalised Royal Resort where he was kept in police custody after locals found him with a woman, who the leader claimed to be his wife.

Mahanagar Hefazat Secretary Ferdausur Rahman on Saturday said Mamunul went to the resort with his second wife where the local Chhatra League and Jubo League leaders confined and harassed him before calling in the police.

Also read: Hefazat activists' show of force frees leader Mamunul from police custody

Later, in the evening, madrasa teachers and students gathered in front of the resort and started chanting slogans demanding the release of Mamunul. At one point they tore down the main gate of the resort and ran riot after entering the property.

As the situation was getting out of control, police released Mamunul to the protesters. Yet they continued the vandalism at the resort until the law enforcement let Mamunul's wife go, too, at around 8pm.