BBC – Twitter says it shut more than 377,000 accounts for promoting terrorism in the second half of last year.
It represents a 60% increase on the last numbers provided by the company, which covered the period from February to August 2016.
Twitter has faced pressure to do more to stop groups such as so-called Islamic State from using its platform.
Last year, MPs said it had become a “vehicle of choice” for spreading extremist propaganda on the internet.
In Twitter’s latest transparency report – which covers the period from 1 July to 31 December 2016 – it said internal measures to tackle the issue had improved.
It said that 74% of the accounts it had suspended had been “surfaced” by internal, proprietary spam-fighting tools.
That compares with a third in its previous figures.
It also said it had shut a total of 636,248 accounts for promoting terror since August 2015, when it first began tracking numbers.
That is up from a total of 355,000 reported last summer.