are investigating two robberies that happened Sunday.
In the first incident, a man with a knife held up on the 1000 block of Ferry Street Sunday around 10:35 a.m.
The Express-Times, citing a city police report, says the man got away with a small amount of cash and "tobacco products."
Police said the robber was a dark-skinned black man, five feet, nine inches tall and wearing a navy hooded sweatshirt with white letters.
In the second incident, a pizza man was robbed while making a delivery on the 600 block of Walnut Street.
According to the Express-Times, the robber grabbed the delivery man, threatened him and demanded his money. He ran off with a small amount of cash, police say.
The robber was a light-skinned black man, standing about five-feet, 11 inches, weighing 230 pounds, with short hair and no facial hair. He wore dark pants and a dark sweatshirt.
Anyone with information on either incident is asked to call Det. Darren Snyder at 610-250-6637.