New Delhi: A security alert was sounded in the national capital on Wednesday evening following a series of blasts in Mumbai and police personnel were fanned across the city to carry out intensive searches and checkings.

A senior police official said top officials were reviewing the security situation in the city.

"A tight security apparatus has been put in place. Senior officials are on the streets monitoring the security scenario. Police personnel have been deployed across the city," a senior police official said.

The official said police personnel were deployed at public places like malls, cinema halls, parks, popular hangouts, ISBT and railway station. They are conducting checks.

Three explosions were reported from south Mumbai's Zaveri Bazar, Dadar in Central Mumbai and Opera House in Charni Road following which this action has been taken, the official said.

The national capital last month had a minor scare when a low intensity blast took place outside Delhi High Court. No one was injured in the incident.

"There is nothing to worry. All precautions have been taken. We appeal to the citizens to report to us about any suspicious objects or persons they come across," the official said.

Red alert sounded across Kerala

Red alert was sounded across Kerala in view of the serial blasts in Mumbai.

Chief Minister Oommen Chandy had directed police to remain vigilant all over the state, especially in major cities including the state capital and commercial hubs like Kochi and Kozhikode, police said.

Strategic installations, major temples, airports, railway and bus stations have been brought under close monitoring of police and security agencies, they said.

High alert in Gujarat

Evoking similar concern post the blasts in Mumbai a high alert has been sounded in Gujarat,
Minister of State for Home Praful Patel said in Gujarat.

"High alert has been declared for Gujarat state," Patel told media persons, adding that all security agencies have been alerted.

The Minister also called a meeting of top officials to discuss the emerging law and order situation.

Director General of Police Chitranjan Singh said Special Operations Group (SOG) in districts and crime branches in major cities like Ahmedabad, Surat, Vadodara and Rajkot have been put on alert.

He said Quick Response Teams (QRTs) have been sent to places such as bus stations, railway stations, airport, religious places and other public places.

"Vehicle checking at check posts has been initiated, so has been checking at hotels," Singh said.

Anti Terrorist Squad (ATS) chief Ashish Bhatia said they have put their units on alert and have initiated checking at places of entry and exit in the city, especially of those vehicles that are coming from Mumbai.

On July 26, 2008, serial bomb blasts rocked Ahmadabad killing 57 persons and injuring 200 others.

High alert sounded in Hyderabad

A high alert was sounded in Hyderabad as well and security personnel kept a strict vigil at all important locations.

"Following the blasts in Mumbai, we have announced an alert in Hyderabad and police personnel have been asked to remain on alert and check security at all important and crowded places," a senior police officer told PTI tonight.

Task Force sleuths intensified checking at Central Bus stand and at railway stations at Nampally and Secunderabad here among other places.

The state capital, which has been on terror radar, was rocked by blasts at the historic Mecca Masjid on May 18, 2007 and the twin explosions at Lumbini Park and Gokul chat (an eatery) on August 25 the same year claimed the lives of more than 50 people and left hundreds injured.

Alert sounded in Assam

The Assam government sounded an alert throughout the state in view of the Mumbai serial blasts.

A government spokesman said in the wake of reports of presence of several terrorist groups here, the alert was sounded and additional security pickets posted in vulnerable areas.

Entry and exit points of important cities and towns were being guarded round-the-clock and vehicles checked.

North East Frontier Railway (NFR) sources said security have already been tightened along the tracks particularly after the recent IED blast near Rangiya which caused derailment of several compartments of the Guwahati-Puri Express and left nearly 100 people injured.

Red alert sounded in Bihar

A red alert was sounded in Bihar this evening following serial blasts in Mumbai, a top police official said.

Director General of Police (DGP) Neelmani said the security forces and intelligence units have been put on high alert.

Red alert in Kolkata

A red alert was issued in Kolkata As well and its vicinity.

Police sources said a close watch was being kept on railway and metro stations, airport, port, hotels and shopping malls.

Security was heightened in all government offices and installations.

Earlier, the Kolkata Police warned there was a possibility of terrorists seeking sanctuary in the metropolis and directed landlords against letting out their premises without verifying the antecedents of tenants.

"There is every likelihood of breach of peace and tranquility and there is grave danger to human life and safety and injury to public property on that account," an official release said.

"Therefore, it is felt necessary some checks on landlords and tenants so that terrorists, anti-social elements in the guise of tenants may not cause riots or damage to public property," it added.