Was it an impromptu crime or a targeted robbery? That's just one of the questions the San Francisco Police Department is mulling after a vehicle collision in SoMa turned into a midday mugging.

It was 12:45 in the afternoon Wednesday when two men in their 50s were involved in a vehicle collision with the driver and passenger of a black Honda Accord.

Police didn't have any additional details on the circumstances of the collision Friday, saying only that it occurred at the intersection of Sixth and Harrison Streets.

Two men, one in his 20s and another in his 30s (police didn't provide a further description for either), leapt out of the Honda and headed to the other car. One of them pointed a handgun at the other men, and told them to hand over their property.

The duo of muggers took at least one of the men's cell phones and one of their driver's licenses before hopping back into that Honda and fleeing the scene.

As of Friday morning, police say they're still investigating, and that no arrests have been made. If you have any information on the case, give SFPD's Anonymous Tip Line a ring at 415-575-4444 or to text a tip to Tip411 with SFPD at the beginning of the message.