In 2007, Rambukwella crossed over from the opposition to the government of President Mahinda Rajapaksa, and joined the Sri Lanka Freedom Party (SLFP).[6] Rambukwella made an attempt to cross back to the UNP in 2015, however this attempt failed and he was forced to remain with Rajapaksa's faction of the SLFP, which ended up losing the 2015 election.
In February 2012, Rambukwella claimed to have "jumped"[7] from the balcony of a third-floor hotel room in Melbourne with the intention of reaching his companion, injuring his legs.[8] After receiving a direct aid of Rs. 20 million from the President's Fund to cover his medical expenses, he swiftly recovered from his injuries.[citation needed]
In October 2023, the National Medicines Regulatory Authority (NMRA) revealed forged documents were submitted for Customs clearance to procure a batch of vials containing human immunoglobulin which also failed to pass quality tests. It was claimed to have been produced by Livealth Biopharma Pvt Ltd. India and imported by a local medicine supplier called Isolez Biotech Pharma AG (Pvt) Ltd. However, the Indian manufacturer informed the NMRA that they did not manufacture or export the immunoglobulin batch. Around Rs. 130 million was believed to have been misappropriated. On 2 February 2024, Rambukella was arrested by criminal investigators in Colombo, alongside former Secretary to the Ministry of Health Janaka Chandragupta, and produced to Maligawatta courts. A judge ordered him to be remanded until 15 February.[9][10] Rabukwella resigned from his ministerial post on 3 February following public pressure.[11]
