Four teenagers have been arrested following a string of violent carjackings in south Brisbane this week.

Police believe two 17-year-olds, a 16-year-old and a 15-year-old are responsible for the two attacks at Yeronga on Tuesday night and another in Runcorn in the early hours of Thursday morning.

The carjackers strike at the 7-Eleven on Fairfield Road in Yeronga. Credit:Bianca Stone - Sunrise

After a tip off from the public, police stormed a house at Bracken Ridge on Thursday afternoon, where a number of people tried to flee.

Police said about seven young men were located before four were arrested.