Anything is possible, but this would be a significant departure from AQ's new MO.
With time, new information will reveal more re. the perpetrators - but for now, I'd expect an international link & that's most likely to be #ISIS.
ndtv.com/india-news/isi…
A source in #SriLanka told @itvnews that 48 suspects detained after the #SriLankaAttacks spent time in #Syria with #ISIS.
That's likely a broad sweep of all known returnees, but still, 48 is more than the government had acknowledged had gone in total (AFAIK).