WASHINGTON (Dispatches)– The ISIL group is "expressing an increased interest” in crossing the US-Mexico border to carry out a terrorist attack on American soil, according to US law enforcement agencies.

Social media postings show terrorists from ISIL, also known as ISIS, are attempting to exploit the porous US-Mexico border and seeking ways to covertly cross it, warns a Texas Department of Public Safety (DPS) bulletin obtained by FoxNews.com.

"A review of ISIS social media messaging during the week ending August 26 shows that terrorists are expressing an increased interest in the notion that they could clandestinely infiltrate the southwest border of US, for terror attack,” the bulletin said.

"Social media account holders believed to be ISIS terrorists and propagandists have called for unspecified border operations, or they have sought to raise awareness that illegal entry through Mexico is a viable option,” states the law enforcement bulletin.

The three-page bulletin, entitled "ISIS Interest on the US Southwest Border” and dated August 28 was released on Thursday.

About 32 Twitter and Facebook posts monitored by Texas law enforcement over one recent week reflected interest in the southern border, according to the bulletin.

"The identities of persons operating these accounts cannot be independently verified; however the accounts were selected for monitoring based on several indications that they have been used by actual ISIS terrorists for propaganda purposes and collectively reach tens of thousands of followers,” the bulletin said. "One account was verified as belonging to an individual located in Mosul, Iraq.”

In addition, Judicial Watch, a conservative government watchdog group, said Friday that ISIL operatives are in Juarez, Mexico, just across the border from Texas, and are planning to attack the United States with car bombs.

"Agents across a number of Homeland Security, Justice and Defense agencies have all been placed on alert and instructed to aggressively work all possible leads and sources concerning this imminent terrorist threat,” Judicial Watch said on its website.

The Texas DPS bulletin comes one week after a DHS bulletin dated August 22, a copy of which was also obtained by FoxNews.com. That bulletin, entitled "Online Reaction but No Known Credible Homeland Threats from ISIL and Its Supporters Following US Air Strikes,” addresses potential threats in response to recent US airstrikes on ISIL targets in Iraq.

ISIL has taken control of large parts of Syria’s northern territory. The savage group sent its fighters into neighboring Iraq in June, quickly seizing large swaths of territory straddling the border between the two countries.

US military officials say the brutal terrorist group is growing in strength and is much more capable than the one US forces faced when the group was called "al-Qaeda-Iraq” during the US war in Iraq.

Senior American officials say the ISIL terror network has been successful in attracting more American and European fighters to Syria in recent months, The New York Times reported on Thursday.