More gunshots. Another teenager dead, another injured along with a 12-year-old boy.

Less than 24 hours after mourners gathered for the funeral of 16-year-old Caleer Miller Jr., another Philadelphia teenager has died from gunfire.

Police are searching for a man reported to have fired a gun into a group of youths hanging out near 19th and Somerset Streets in North Philadelphia early Sunday morning, killing one of them.

Marquez Houston, 16, was shot multiple times, at least once in the head, and was pronounced dead at the scene at 12:26 a.m., police said. A 12-year-old boy was shot in the right thigh and rushed by officers to Temple University Hospital.  He was then transferred to St. Christopher's Hospital for Children, where he was in stable condition later Sunday.

"We are deeply saddened to learn of the tragic and senseless death of one of our own, Marquez Houston," Universal Audenried Charter High School said in a statement. "He was a respectable young man and will be truly missed."

Minutes after that shooting spree and less than a mile away, an 18-year-old man was shot in the back while walking on the 2100 block of North 17th Street. Police said he ran to French Street, where he was picked up by Temple University police officers and taken to Temple University Hospital. The victim was in stable condition Sunday, police said.

An initial investigation revealed "no indication" the shootings are related, police spokeswoman Officer Tanya Little said Sunday afternoon.

In the fatal shooting, the gunman, described as black, 5-foot-9, thin, in his early 20s with light brown eyes and wavy hair, and dressed in dark clothing, ran from the scene on the 2700 block of North 19th Street. There, police responding to 911 calls reporting "a person with a gun" found the 16-year-old lying face down in the road.

The scene was reminiscent of one in South Philadelphia on the 2300 block of South 12th Street the evening of Oct. 24. That shooting, resulting from a feud between two groups of teenagers, cut short the lives of Salvatore DiNubile, 16, a junior at St. Joseph's Preparatory School, whose funeral last weekend drew thousands, and Miller, also 16 and a junior at Mastery Charter Thomas Campus, whose passion for the 76ers and ever-present smile was remembered by hundreds who attended a service celebrating his life Saturday morning at Love Kingdom Fellowship Church, just hours before the shootings in North Philadelphia.

Both DiNubile and Miller were shot in the chest and pronounced dead within an hour.

Another 16-year-old, Brandon Olivieri, of the 1600 block of South Juniper Street, turned himself in days after that shooting. He is charged with two counts of murder and is being held without bail pending a preliminary hearing on Nov. 15.

Staff writer Valerie Russ contributed to this article.