Police took Dzhokhar Tsarnaev, who had been hiding on a boat in Watertown, Mass., into custody, ending a manhunt that shut down the Boston area.

House Homeland Security Committee Chairman Michael McCaul (R-Texas) commended the FBI, Joint Terrorism Task Force and Boston Police, calling their efforts “monumental.”

“While we have made it more difficult for terrorists to carry out attacks from overseas, the attack on the Boston Marathon is indicative of the shift in terrorists' tactics in recent years to inspire people who are living in the United States to strike," McCaul said in a statement Friday night. "Americans must not back down in the face of terrorism, and we will continue to look for those would attempt to do us harm.”

Rep. Peter King (R-N.Y.), chairman of the Homeland Security Subcommittee on Counterintelligence and  Terrorism, called on law enforcement to maintain “extensive intelligence and counterterrorism programs within their states, cities and local communities.”

“The fact that these terrorists were from overseas, living legally in our country for a period of time, and the fact that there was no federal intelligence or chatter prior to the marathon bombings demonstrates once again the Islamist terrorist threat to our country from within our borders,” King said in a statement.

“As has been demonstrated in recent years there is a significant terrorist threat from people living within our country under the radar screen.”

Earlier Friday, King called for “increased surveillance” of Muslims, saying the Boston Marathon bombing suspects' links to Chechnya represented a “new front” in the war on terror.

“Police have to be in the community, they have to build up as many sources as they can, and they have to realize that the threat is coming from the Muslim community and increase surveillance there,” King told National Review. “We can’t be bound by political correctness. I think we need more police and more surveillance in the communities where the threat is coming from.”