Durban - Heavily armed suspects fled with an undisclosed amount of cash after bombing a safe at a service station in Winklespruit, south of Durban, police said on Friday.KwaZulu-Natal police spokesperson Colonel Thembeka Mbhele told News24 that the incident occurred around 23:00 on Thursday night."The complainant alleged that yesterday [Thursday, July 27], at about 23:00, he was performing his duties as a security guard when he was confronted by armed suspects. The suspects bombed the safe and removed cash before fleeing the scene with an undisclosed amount of cash," Mbhele said.Winklespruit residents said they heard gunshots fired during the robbery.Lara Cloete wrote on Facebook: "There was [sic] a lot of shots fired. Also was hoping that it was fireworks. Sounded really close. Scary world we are living in."Nerisha Jagers posted: "Oh my gosh I heard them too!! Was so scary!""A case of business robbery was opened at the Amanzimtoti police station for investigation," Mbhele added.