Iran live updates: US blockade of Iran's Strait of Hormuz ports to begin Monday

As Trump's deadline for Iran looms, an Islamic Revolutionary Guard Corps spokesman, Ebrahim Zolfaghari, released a statement Tuesday about Iranian attacks on Israel and U.S. interests in the Middle East, saying they will continue to be "heavier and more massive."

"The wave of effective and devastating attacks by the Iranian armed forces against the military, security, and economic infrastructure of the Zionist regime in the occupied territories and centers related to the criminal America in the region will continue, heavier and more massive," Zolfaghari said.

The spokesperson said the IRGC would target "infrastructure of the US and its allies to deprive them of the region's oil and gas for years and force them to leave the region."

President Donald Trump has been made aware of Pakistan's proposed two-week deadline extension and "a response will come," White House press secretary Karoline Leavitt told ABC News.

The prime minister of Pakistan is asking President Donald Trump to extend the deadline he set for Iran, saying diplomatic efforts are "progressing."

"Diplomatic efforts for peaceful settlement of the ongoing war in the Middle East are progressing steadily, strongly and powerfully with the potential to lead to substantive results in near future. To allow diplomacy to run its course, I earnestly request President Trump to extend the deadline for two weeks," the prime minister said in a statement.

He went on, "Pakistan, in all sincerity, requests the Iranian brothers to open Strait of Hormuz for a corresponding period of two weeks as a goodwill gesture. We also urge all warring parties to observe a ceasefire everywhere for two weeks to allow diplomacy to achieve conclusive termination of war, in the interest of long-term peace and stability in the region."

Iranian-affiliated cyber actors are targeting U.S. critical infrastructure, according to a new warning from the federal government.

Numerous agencies, including the FBI and NSA, "are urgently warning U.S. organizations of ongoing cyber exploitation of internet-connected operational technology (OT) devices, including Rockwell Automation/Allen-Bradley-manufactured programmable logic controllers (PLCs), across multiple U.S. critical infrastructure sectors," according to an alert published on Tuesday.

Multiple critical infrastructure sectors experienced disruptions, and in some cases "this activity has resulted in operational disruption and financial loss," the alert said.

The Iranian-backed group has targeted government services industry, water and wastewater systems and the energy sector, according to the agencies.

Iranian-backed actors have carried out similar actions in the past, according to the government.