PHILADELPHIA -- A Texas man who allegedly confessed to stomping to death his infant son has waived his right to an extradition hearing in Philadelphia.

Galveston Police Sgt. Gary Jones said 21-year-old Travis Mullis should be back in Texas by Tuesday.

“He agreed to the waiver,” said Galveston Police Detective Gary Jones. “When we head back to Texas, he’ll be going with us.”

Mullis has been charged with capital murder in Galveston and his bond has been set at $1 million.

Police say he admitted that he placed 3-month-old Alijah Mullis on the ground and then stomped on his head until he felt the skull collapsing. The baby’s body was found last week on the side of a Texas road near his child safety seat.

POLICE AGENCIES

Travis Mullis, left, and 3-month-old Alijah Mullis.

Authorities say Mullis stopped in Maryland, where he has family, before driving to Philadelphia and surrendering to police.

“We have a pretty clear picture of what happened based on (Mullis’) statements. But I can’t release those details without risking, hurting the case,” Galveston police spokesman Lt. Jorge Trevino said.

He also has a felony charge out of nearby Brazoria County of enticing a child. Alvin police are investigating an allegation that Mullis took an 8-year-old girl from her bed in January, took her to a school or park and asked her to remove her pants.

Investigators still have more questions for the infant’s mother, who spoke with them after the baby’s body was found. But a family representative has stated she will not be talking to police after getting an attorney, Trevino said.

“We have more questions for her in order to wrap up the investigation,” he said. “But she is not cooperating with that.”

He said Sunday that he couldn’t comment on whether she’s considered a suspect.

After attending a memorial service on Saturday for her son, the woman left the church, declining to talk to the reporters.

Photo by Jennifer Reynolds

Scott Pena of the Galveston Police Department Crime Scene Unit inspects a child's car seat early Tuesday near the body of a child on Cherry Hill at the East End of the Seawall.

During the service, she read from a letter she wrote to her son Alijah, the Houston Chronicle reported Sunday.

“Mommy loves you so much,” she said. “Thank you so much for giving me the best three months of my life.”

Neighbors of the family, who were living in a trailer with friends in Alvin, told the newspaper they had many unanswered questions about what happened.

“The same question probably thousands of people got — Why? No matter how much anger you have for somebody, you don’t go to the point of doing that, especially to a baby,” said neighbor James Robertson.

The couple apparently were having financial and relationship problems and often argued, said Robertson’s wife, Lisa.

Trevino said the couple had argued Monday night before the infant’s death but that it had not carried over to the next morning, when Mullis left with the baby.

A Galveston couple found the body Tuesday morning as they drove slowly along a road looking for wildlife. DNA tests are pending to positively identify the infant.

Galveston detectives planned to return on Tuesday.

The infant’s death comes just three months after a fisherman found the remains of a 2-year-old girl in a plastic box that had washed ashore in Galveston Bay. That child, dubbed “Baby Grace,” was later identified as Riley Ann Sawyers of Spring.

Riley’s mother and stepfather are charged with capital murder in her beating death.

Galveston Police say that childhood friends of Travis Mullis describe the 21-year-old as reclusive, troubled and a ticking time bomb waiting to go off.

They say that those friends suspected he would find trouble one day, but nobody suspected he would stand accused in the death of an innocent child.