Alien Raiders

Alien Raiders is a 2008 American science fiction horror film, starring Carlos Bernard, Rockmond Dunbar and Mathew St. Patrick. The film is Ben Rocks first feature film as a director. The film was produced by Daniel Myrick, John Shiban, and Tony Krantz, and was released by Warner Home Video and Raw Feed in September 2008.

As the police arrive, the group argues whether or not to leave, but their leader, a man named Ritter, tells them that they need to finish their job. They release the hostages Spooky already managed to clear and move the rest to the back of the store. As they inspect one of the corpses, it becomes clear that the person was infected with an organism that breeds inside the person. With Spooky dead, the group resorts to a different method for checking whether the rest of the people are infected or not. One by one, the hostages are taken to another room and have one of their fingers cut off, which Sterling, the doctor of the group, uses to verify if they are infected or not.Outside the store a policeman named Seth, whose stepdaughter Whitney works as a cashier at the store, takes charge of the police operation. They discover that Ritter used to work as a rocket scientist and that the group hunts people that are infected with an alien parasite that came to Earth inside a meteorite, which the cops dont believe. Trying to negotiate with Ritter, they come to the agreement that Ritter will release one of the hostages if the police bring them a woman named Charlotte, who used to be part of the group and possesses the same ability as Spooky did. ........

Source: Wikipedia