Traditionally, the United States and China have negotiated new sanctions before involving remaining council members.
Another defense official also indicated that the missile fired on Sunday also fell short of succeeding in re-entry, a key ballistic missile technology the North is reportedly struggling to achieve.
He also called on all United Nations member states to honor their obligations under Security Council resolutions on sanctions on the DPRK.
The council has already imposed tough sanctions on the DPRK, including banning the sale and transfer of coal, iron and iron ore from the country's territory.
"Absolutely, sanctions is something that we are looking at and we are going to continue to see where that takes us".
The U.S. and China were negotiating a resolution that would implement new sanctions and tighten existing penalties on Pyongyang, diplomats said. "There is no reason for North Korea to be having these actions outside of the fact they just choose to do so".
The U.N. Security Council first imposed sanctions on North Korea in 2006 and has strengthened the measures in response to its five nuclear tests and two long-range rocket launches.
Adm. Harry Harris Jr. made the remarks at a lecture for a Tokyo think tank after meeting with Japanese leaders that he said focused on North Korea's missile and nuclear programs.
Trump warned in an interview with Reuters this month that a "major, major conflict" with North Korea was possible, and in a show of force, sent the Carl Vinson aircraft carrier strike group to Korean waters to conduct drills with South Korea and Japan.
The test came as global powers engaged in a carrot and stick strategy with North Korea.
North Korea, which regularly threatens to destroy the United States in a sea of flames, has accused Washington of pushing the Korean peninsula to the brink of nuclear war with recent military drills with South Korea and Japan.
"It is actually North Korea trying to intimidate the global community", Haley said, "and Russian Federation itself should be concerned because that ballistic missile test was a signal to South Korea for their new elections, it was a signal to Russian Federation in how close it got, it was a signal to Japan being in the region, and it was a signal to us".
"We can not be in a "wait and see" mode until the next provocation occurs, " said France's Ambassador François Delattre.