WATERLOO - Waterloo police are investigating another home invasion robbery in Waterloo.

At 3:15 a.m. today, police responded to the call at 217 W. Parker St.

Police said that two masked men with guns entered the house and demanded money from the occupants. One round was fired from a gun in the house, but the occupants were not injured.

The two suspects took money and other items from the home and left in an unknown direction.

Police said the two suspects were described as black men, but no other information was available.

A similar home invasion was reported Nov. 6 at 533 Reed St. There was an attempted home invasion at 517 Reed St. on Nov. 5.