Four Singaporeans were arrested by the Criminal Investigation Department of the Singapore Police Force (SPF) for their suspected involvement in a murder in Johor Bahru (JB), the police said in response to media queries on Friday (March 20).Three men, aged between 23 and 29, and a 27-year-old woman were handed over to Malaysian authorities on Thursday to assist with investigations.The alleged incident happened on March 14 at JB, police said.SPF said a Malaysian court issued warrants for the arrest of the four, while the Royal Malaysia Police (RMP) sent in a request for assistance.Subsequently, SPF conducted simultaneous operations island-wide on Thursday, including an operation at a residential unit at Teban Gardens Road.In a video posted to Threads, multiple police and Singapore Civil Defence Force officers can be seen stationed beneath a block in Teban Gardens beside an inflated safety life air pack.Some personnel can be seen gesturing at something above them, although it is unclear what the situation was about. Read more