Three people were admitted to Mater Dei after being involved in an argument in Paceville.
The incident happened at around 1am, when the Police were informed of the argument at an establishment in Triq Gort in Paceville.
A Police spokesperson told TVM that the argument involved around 50 people, the majority of them Syrians.
The three persons hospitalised were two Libyans aged 33 and 34 and an Irishman aged 36 but their condition is not as yet known.
In a statement the Police said that as about 50 persons were involved a number of people have been detained to establish the cause of the argument during which taser guns had to be used. Police investigations are ongoing.