Whistleblower site Sarawak Report may have started out focusing on grassroots concerns and issues in East Malaysia, but its editor Clare Rewcastle-Brown said she eventually found herself on the trail of 1MDB.

"You suddenly realise you have got your scent on what is clearly a global story and I couldn't resist that story of a lifetime, and so I went for it," she said in an interview with BFM radio this morning.

The 1MDB case also highlighted the issues with the financial systems internationally, she said.

"(This case) addresses that globally, why it was possible that a place like Malaysia could be pillaged this way," she said.

But aside from these international concerns, one of the reasons that pushed her to pursue the 1MDB scandal was her confidence in Malaysia.

Her confidence in Malaysia, she said, was inspired by all the Malaysians who were so passionate about reforms and had such a "clear idea" of how things should be done.

But taking on corruption allegedly rooted in the federal government was not an easy task, she admitted.

She received all sorts of threats and harassment from people she alleged were being paid to discredit her, but she was determined not to give in to "bullies".

According to an interview with The Star Online, Rewcastle-Brown said she lodged a police report in 2015 after being followed in Hyde Park in London, where she is based.

She also claimed that slain deputy public prosecutor (DPP) Kevin Morais (photo) had supposedly sent emails to her but these emails were "magically erased" from her inbox after he was kidnapped and murdered.

"Luckily I was able to...retrieve those messages.

"A computer expert checked and confirmed that my computer was sending messages back to Putrajaya, and I knew what that meant.

"I was shaken but not so surprised. Obviously very distressed," she said.

Shortly after his death, Morais' brother, Charles, had said in a statutory declaration that Morais had been investigating then prime minister Najib Abdul Razak (photo) over misappropriation of funds from 1MDB-linked SRC International.

Meanwhile, Rewcastle-Brown noted with amusement that though there were allegedly people who were paid to discredit her, no one ever approached her with the offer of money to discontinue her writings.

"I have to say I am quite proud...nobody ever seems to think it was worth coming to me to offer me money," she said on BFM.

She quipped that she might think twice about taking on an "angry federal government" again, as it was very tough and challenging despite her relative safety and connections in London.

However, she said the experience has been very worthwhile and her investigations into 1MDB had been fascinating.

Now that there is a new government in place, she said she is "delighted" at the prospect of local journalists outclassing her in investigative stories.

"I feel I am going to be much less relevant very quickly and I am delighted about that.

"There are a few Malaysia-related stories (I have my eye on), but I am waiting to see (local journalists) carry on and take on this narrative now," she said.

Despite the charges in Malaysia against her being dropped, Rewcastle-Brown is still facing a lawsuit in London from PAS, for claiming the Islamist party received funds from BN.

When asked about whether she has evidence that PAS did receive funds from BN, she simply said, "I believe I do, yes".

She returned to Malaysia last Saturday for the first time since Bukit Aman issued an arrest warrant against her for alleged activities detrimental to parliamentary democracy.