Twitter has deleted more than 125,000 "terror-linked" accounts, mostly related to the Islamic State group, since the middle of 2015, the micro-blogging company said.
ISIS has been effectively using social media, especially Twitter and Facebook, to get recruiters and spread their ideology.
"Like most people around the world, we are horrified by the atrocities perpetrated by extremist groups. We condemn the use of Twitter to promote terrorism and the Twitter Rules make it clear that this type of behaviour, or any violent threat, is not permitted on our service," twitter said in a post on Friday.
Stating that there was no "magic algorithm" for identifying "terrorist content" online, Twitter said it will enforce its rules aggressively and work with authorities to clamp down on such accounts.
The company said that it had set up larger teams to check on reported Twitter accounts and was also using "spam-fighting tools" to identify "potentially violating accounts."
"We have already seen results, including an increase in account suspensions and this type of activity shifting off of Twitter," the company said.
A study last year had shown that ISIS' social media success lies in "hyper" Twitter accounts created by the group's supporters, stating that ISIS Twitter accounts had about 1,000 users each on an average.
The Islamic State group's official social media experts disseminated information such as pictures and videos through smaller accounts, which were then shared by other accounts, the study said.