A 29-year-old woman stabbed and killed her sister's husband at Rehoboth on Saturday after he tried to end an argument between the siblings. His wife and he had allegedly been sleeping when their door was kicked open by his wife's sister, prompting the argument. He died instantly after being stabbed once in the chest. Meanwhile, Police in the Otjozondjupa Region have arrested one of the five suspects and are in pursuit of the rest after they robbed an E Tuauana Rupingena Security Company cash-in-transit vehicle at Okakarara on Friday. The men driving in a Volkswagen Polo sedan held the guards at gunpoint, robbed them of more than N$188 000 and drove into Farm Wagnog, where they divided the loot. On Sunday, an unknown suspect broke into a shack in Windhoek's Goreangab Dam residential area, held its owner at gunpoint, robbing three cell phones and N$1 250.